SUMMARY CHARACTERISTICS OF THE W SATELLITESsatellite.bitnet.info/ro/opensky/handbook__w.pdf · The...
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SUMMARY CHARACTERISTICS OF THE W SATELLITES This document contains information on the mission, communications features, coverages, frequency plans and implementation of the W satellites.
Transcript of SUMMARY CHARACTERISTICS OF THE W SATELLITESsatellite.bitnet.info/ro/opensky/handbook__w.pdf · The...
SUMMARY CHARACTERISTICS OF
THE W SATELLITES
This document contains information on the mission, communications features, coverages, frequency plans andimplementation of the W satellites.
The W Satellites
THE W SATELLITES
TABLE OF CONTENTSTHE W SATELLITES ..........................................................................................................................................................4
INTRODUCTION.....................................................................................................................................................................4COMMUNICATIONS FEATURES...........................................................................................................................................5
W1 .....................................................................................................................................................................................5W2 .....................................................................................................................................................................................7W3 .....................................................................................................................................................................................7W3A...................................................................................................................................................................................7W4 .....................................................................................................................................................................................9W5 .....................................................................................................................................................................................9
BEACONS .............................................................................................................................................................................11SATELLITE IMPLEMENTATION..........................................................................................................................................12
TABLE OF FIGURES
FIGURE 1. EUTELSAT W1 FREQUENCY PLAN (FREQUENCIES IN MHZ)......................................................................15FIGURE 2 . ILLUSTRATION OF W1 RECEIVE COVERAGE (10° EAST )...............................................................................16FIGURE 3. ILLUSTRATION OF W1 TRANSMIT COVERAGE (10° EAST ).............................................................................17FIGURE 4 . ILLUSTRATION OF W1 RECEIVE STEERABLE COVERAGE (10° EAST )..........................................................18FIGURE 5 . ILLUSTRATION OF W1 TRANSMIT STEERABLE COVERAGE (10° EAST ).......................................................19FIGURE 6 . EUTELSAT W2 FREQUENCY PLAN (FREQUENCIES IN MHZ).....................................................................20FIGURE 7 . ILLUSTRATION OF W2 RECEIVE COVERAGE (16° EAST )...............................................................................21FIGURE 8 . ILLUSTRATION OF W2 TRANSMIT COVERAGE (16° EAST )............................................................................22FIGURE 9 . ILLUSTRATION OF W2 STEERABLE SPOT RECEIVE COVERAGE (16° EAST )................................................23FIGURE 10 . ILLUSTRATION OF W2 STEERABLE SPOT TRANSMIT COVERAGE (16° EAST ) ..........................................24FIGURE 11 . EUTELSAT W3 FREQUENCY PLAN (FREQUENCIES IN MHZ)...................................................................25FIGURE 12 . ILLUSTRATION OF W3 RECEIVE COVERAGE (7° EAST ) ...............................................................................26FIGURE 13 . ILLUSTRATION OF W3 TRANSMIT COVERAGE (7° EAST )............................................................................27FIGURE 14 . ILLUSTRATION OF W3 STEERABLE SPOT RECEIVE COVERAGE (7° EAST )................................................28FIGURE 15. ILLUSTRATION OF W3 STEERABLE SPOT TRANSMIT COVERAGE (7° EAST )..............................................29FIGURE 16. EUTELSAT W3A FREQUENCY PLAN (FREQUENCIES IN MHZ) ................................................................30FIGURE 17. THE EXPECTED UPLINK EUROPEAN A SERVICE AREA OF W3A AT 7° EAST (EQUIVALENT TO THE W3
UPLINK PERFORMANCE)...............................................................................................................................................31FIGURE 18. THE EXPECTED DOWNLINK EUROPEAN A SERVICE AREA OF W3A AT 7° EAST (EQUIVALENT TO THE
W3 DOWNLINK PERFORMANCE).................................................................................................................................32FIGURE 19. THE EXPECTED EUROPEAN B SERVICE AREA OF W3A AT 7° EAST ............................................................33FIGURE 20 THE EXPECTED EUROPEAN C SERVICE AREA ON THE UPLINK OF CHANNELS A OF W3A AT 7° EAST ...34FIGURE 21. THE EXPECTED EUROPEAN C SERVICE AREA ON THE DOWNLINK OF CHANNELS J OF W3A AT 7° EAST .
.........................................................................................................................................................................................35FIGURE 22. THE EXPECTED EUROPEAN C SERVICE AREA ON THE UPLINK OF CHANNELS H OF W3A AT 7° EAST .36FIGURE 23. THE EXPECTED AFRICAN SERVICE AREA OF W3A AT 7° EAST . .................................................................37FIGURE 24 . EUTELSAT W4 FREQUENCY PLAN – “RUSSIAN” CHANNELS (FREQUENCIES IN MHZ)......................38FIGURE 25 . EUTELSAT W4 FREQUENCY PLAN – “AFRICAN/STEERABLE” CHANNELS (FREQUENCIES IN MHZ)39FIGURE 26 . ILLUSTRATION OF W4 RUSSIAN RECEIVE COVERAGE (36° EAST )............................................................40FIGURE 27 . ILLUSTRATION OF W4 RUSSIAN TRANSMIT COVERAGE (36° EAST ).........................................................41FIGURE 28 . ILLUSTRATION OF W4 AFRICAN RECEIVE COVERAGE (36° EAST )............................................................42FIGURE 29 . ILLUSTRATION OF W4 AFRICAN TRANSMIT COVERAGE, CHANNELS 30 TO 36 (36° EAST )..................43FIGURE 30 . ILLUSTRATION OF W4 AFRICAN TRANSMIT COVERAGE, CHANNELS 38 AND 40 (36° EAST ) ...............44FIGURE 31 . ILLUSTRATION OF W4 TRANSMIT STEERABLE COVERAGE (36° EAST )....................................................45FIGURE 32 . EUTELSAT W5 FREQUENCY PLAN (FREQUENCIES IN MHZ)...................................................................46FIGURE 33. ILLUSTRATION OF W5 RECEIVE COVERAGE (70.5° E)...................................................................................47
The W Satellites
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FIGURE 34. ILLUSTRATION OF W5 TRANSMIT COVERAGE (70.5° E)................................................................................48FIGURE 35. EXAMPLES OF W5 STEERABLE RECEIVE COVERAGE (-4, -2, 0, +2, +4, +6, +8 & +9 DB/K) (70.5°
EAST )..............................................................................................................................................................................49FIGURE 36. EXAMPLES OF W5 STEERABLE TRANSMIT COVERAGE, (40, 42, 44, 46, 48, 50, 52 & 53 DBW) (70.5°
EAST )..............................................................................................................................................................................50FIGURE 37 . W1 IN-ORBIT .....................................................................................................................................................51FIGURE 38 . W2 STOWED FOR LAUNCH...............................................................................................................................52FIGURE 39 . W4 STOWED FOR LAUNCH ..............................................................................................................................53
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The W Satellites
Introduction
The W satellites are designed to provide telecommunications services primarily over Europe (W1, W2, W3,
W3A and W5). and communication services over Russia and Africa (W4).
W1 is designed to provide 28 channels at saturation, W2, W3 and W5 are designed to offer 24 transponders at
saturation and W4 is designed to provide 31 transponders at saturation. W3A is designed to be able to offer
additional capacity at 7º East as well as to back up W3. The W satellites have a minimum operational lifetime of
12 years. The launch dates for the W satellites are as follows:
Satellite Launch Date
W1 September 2000
W2 October 1998
W3 April 1999
W3A Second Half 2003
W4 May 2000
W5 November 2002
The main characteristics of the five satellites are given below.
The W satellites are used principally for telecommunications services, mainly business services, satellite news
gathering, television and radio programme exchanges, etc…. The W satellites are also used to complement
Eutelsat’s offer for TV broadcast distribution services. W1 is deployed at the 10° East orbital position and W2
and W3 are located at 16° and 7° degrees East orbital positions, respectively. W3A is collocated with W3. They
started to replace the EUTELSAT II series at those positions in 1998. W4 is designed to provide mainly
broadcast services and is located at 36º East.
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Communications Features
W1
W1 is designed to provide 28 operational transponders at saturation for a minimum satellite lifetime of 12 years
in geostationary orbit.
The frequency plan is shown in Figure 1. It comprises six “B” channels, eight “D” channels, eight “DS”
channels and six “F” channels.
The frequency bands utilized by each of the channel groups are as follows:
Channel Group Uplink Band Downlink Band
B 14.25 - 14.50 GHz 10.95 - 11.20 GHz
D, DS 13.75 - 14.00 GHz 11.45 - 11.70 GHz
F 14.00 - 14.25 GHz 12.50 - 12.75 GHz
The usable bandwidth of each communications channel is as follows:
- 72 MHz for the B and F channels
- 62 MHz for Channels D3, D4, D3S and D4S
- 54 MHz for Channels D5 to D8 and D5S to D8S
- 40 MHz for Channels D1, D2, D1S and D2S
There are ten channel frequencies on both the uplink and the downlink, each of which is re-used within the fixed
coverage by means of linear orthogonal polarization. Thus there are twenty channels connected to the fixed
coverage on both the uplink and the downlink (the B, D and F channels). Figures 2 and 3 show the fixed receive
and transmit coverages, respectively, from 10º East
Additionally, eight channels (four channel frequencies) are re-used by employing spatial isolation between the
steerable coverage and the fixed coverage. Thus there are eight channels (the DS channels) connected to the
steerable coverage on both the uplink and the downlink.
The centre of the steerable beam can be moved to any point on the visible earth. Also, the orientation of the
elliptical beam can be rotated by up to ± 90º. Figure 4 and 5 show the actual receive and transmit coverage,
respectively, of the W1 single steerable beam.
Flexible cross-connection between the fixed and steerable coverages is provided for Channels D1, D3, D5, D7
and D1S, D3S, D5S, D7S as follows:
The W Satellites
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• Channels D1, D3, D1S and D3S can each receive from either the fixed coverage or the steerable coverage,
the choice of uplink coverage being made on a channel-by-channel basis.
• Channels D5, D7, D5S and D7S can each receive from either the fixed coverage or the steerable coverage,
or simultaneously from both coverages, the choice of operational mode being made on a channel-by-
channel basis.
The eight channels with cross-connection capability are identified in Figure 1. The following operational
possibilities are provided for all eight channels:
• A signal received from one coverage (fixed or steerable) can be transmitted to the other coverage. For
example, the channel pair D3 and D3S could be used to provide bi-directional communication between the
fixed coverage and the steerable coverage.
• A signal received from any given coverage can be simultaneously transmitted to both coverages. For
example, the channel pair D1 and D1S could be used to “broadcast” the same signal received from the
steerable coverage to both the fixed and steerable coverages.
In addition, Channels D5, D7, D5S and D7S each provide the possibility to receive signals from both coverages
and to transmit them to a single coverage or to both coverages. In this case, performance in terms of G/T takes
into account the wider uplink coverage and discrimination between uplink carriers must be ensured through
FDMA (i.e. the spectra of the carriers must not overlap).
For example, the lower half of the 54 MHz bandwidth occupied by the channel pair D5/D5S could be used to
receive traffic from the fixed coverage whilst the upper half could be used to receive traffic from the steerable
coverage. The combined traffic could then be transmitted to the fixed coverage via Channel D5 and
simultaneously to the steerable coverage via Channel D5S. This type of networking between two different
coverages can offer attractive mission features for certain types of services.
The W Satellites
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W2
W2 is designed to provide 24 transponders at saturation with a minimum satellite lifetime of 12 years from
geostationary orbit. As shown in the frequency plan in Figure 6, W2 transponders have 36 MHz and 72 MHz
usable bandwidth.
Each uplink frequency is uniquely related to a downlink frequency. Of the 17 frequencies in each polarization,
any 12 may be selected in orbit for operation on a channel-by-channel basis, independently for each
polarization.
Figures 7 and 8 show these receive and transmit coverages respectively, from 16° East.
In addition to the fixed beams, W2 has a single steerable beam of the same type as that of W1. A set of 10
channels (designated in Figure 6) is switchable between the fixed beam and the steerable beam on a channel-by-
channel basis. Figure 9 and 10 show the actual receive and transmit coverage, respectively, of the W2 steerable
beam.
W3
W3 has the same capacity and lifetime and the same frequency plan as W2, except that the polarization of the C
and D channels is inverted as shown in Figure 11. The uplink to downlink connectivity and the channel
selectivity are identical to that of W2.
Figures 12 and 13 show the receive and transmit coverages respectively, from 7° East.
As for W2, W3 has the same steerable beam with the same 10 channel connectivity and selectivity (except for
the polarization reversal mentioned above). Figures 14 and 15 show the actual receive and transmit coverage,
respectively, of the W3 steerable beam.
W3A
The W3A satellite is designed to be able to offer additional capacity at 7º East as well as to back up W3. The
W3A satellite is designed to operate 40 transponders at saturation for a minimum lifetime of 12.25 years.
However, as can be seen from Figure 16, the frequency plan supports 58 channels. The maximum number of
transponders that can be operated will be a trade-off of the thermal and DC power considerations together with
the levels of back off.
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The satellite will support four different service areas:
• European Service Area A which is used for both uplink and downlink. Typical expected coverage
performances for the uplink and downlink are shown in Figures 17 and 18,
• European Service Area B which is only used for the downlink. A typical expected coverage performance is
shown in Figure 19,
• European Service Area C which is used for uplink at 18 GHz and for both uplink and downlink at Ka-band.
Typical expected coverage performances for the three bands are shown in Figures 20, 21 and 22 and,
• African Service Area which is used for both uplink and downlink. Typical expected coverage performance
is shown in Figure 23.
The frequency plan shows channels with a usable bandwidth of 36 MHz, 54 MHz, 72 MHz and 108 MHz.
The channels are organised in eight groups, designated A, B, C, D, F, G, H and J, as shown in Figure 16. The
bands covered by these channel groups are given below.
The channels have the following connectivity:
• Channels in Group A are connected to the European Service Area C on uplink and European Service Area
B on downlink.
• Channels in Groups B, C and F are connected to the European Service Area A on both uplink and
downlink.
• Channels in Group D are connected to the European Service Area A on the uplink and on the downlink, to
either the European Service Area A or the European Service Area B on a channel-by-channel basis.
• Channels in Group G are connected to the African Service Area on both uplink and downlink.
• Channels in Group H are connected to the European Service Area C on the uplink and to the African
Service Area on the downlink.
• Channels in Group J are connected to the African Service Area on the uplink and to the European Service
Area C on the downlink.
The W3A satellite will embark four active Skyplex units identical to three embarked on HOT BIRD™ 6, thus
including Turbo decoding and catering for 18 carriers at 2 Mbit/s for each unit. These units can be used in
conjunction with channels, A9, A10, A11, A12 and, B5 or G3. It should be noted that B5 and G3 are 72 MHz
channels and therefore can cater for two Skyplex multiplexes each.
The W Satellites
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W4
W4 is designed to provide 31 transponders for a minimum satellite lifetime of 12 years in geostationary orbit.
The channel centre frequencies and the channel spacing are consistent with the Broadcasting Satellite Service
(BSS) Plan. All channels have a usable bandwidth of 33 MHz.
The frequency plans in Figures 24 and 25 show the uplink and downlink frequencies for the 19 channels
connected to the Russian coverage and the 12 channels connected to the African/Steerable coverages
respectively.
All 31 channels can be simultaneously operated at full power over the 12 year lifetime.
W4 provides three coverages as follows:
• a transmit/receive, fixed coverage of Western Russia and territories to the West of Russia (the “Russian”
coverage) operating in circular polarisation;
• a transmit/receive, fixed coverage of Africa (the “African” coverage) operating in linear polarisation;
• a transmit/receive, steerable elliptical coverage (the “Steerable” coverage), operating in linear polarisation,
and with fixed major axis orientation.
As mentioned earlier, 19 channels are connected to the Russian coverage on a permanent basis. Figure 26 and
27 show the receive and transmit Russian coverage, respectively
The remaining 12 channels can be block-switched on the uplink to either the African coverage, shown in
Figures 28, 29 and 30 or the Steerable coverage. On the downlink, six channels are permanently connected to
the African coverage and the remaining six channels are permanently connected to the Steerable coverage, as
indicated in Figure 25.
As shown in Figure 28, the African coverage provides a small spot over Southwestern Europe/Northwestern
Africa that allows for uplinking television channels received from other orbital positions and in particular from
the HOT BIRDTM system, to W4 for re-broadcasting over the African coverage area. The downlink coverage of
channels 30 to 36 is shown in Figure 29. Channels 38 and 40 have a higher power over the downlink African
coverage, as shown in Figure 30.
Figure 31 shows the actual transmit coverage of W4 steerable beam.
The centre of the coverage can be moved in-orbit within regions where mutual interference with the channels
operating in the Russian coverage is avoided.
W5
W5 is designed to provide 24 transponders for a minimum satellite lifetime of 12 years in geostationary orbit.
Each transponder will have a usable bandwidth of 72 MHz.
The frequency plan in Figure 32 shows the uplink frequency bands, downlink frequency bands and
uplink/downlink connections. There are 12 channel frequencies on both uplink and downlink, each re-used with
the aid of linear orthogonal polarization.
The W Satellites
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Using in-orbit switching, each uplink channel in the bands 13.75 - 14.00 GHz and 14.00 - 14.25 GHz can be
independently downlinked either into the 11.45 - 11.70 GHz or the 12.50 -12.75 GHz band, except for channels
F5 and D5 that only have a choice (see Figure 32).
All channels are connected on the uplink and the downlink to very wide fixed coverages. Figures 33 and 34
show the fixed receive and transmit coverages respectively.
In addition to the fixed beams, W5 will have two steerable beams. Each steerable beam can be steered
independently to any point on the visible earth (beam centre). Also, the orientation of each elliptical beam can
be rotated by ± 90º. Two sets of 6 channels on the uplink and 6 channels on the downlink are switchable
between the steerable beams and the fixed beam, channel-by-channel (see Figure 32). Hence, for these channels,
in addition to communications within the fixed coverage, communications may be established between the fixed
beam and each of the steerable coverages or within each of the steerable beams.
This feature makes W5 particularly attractive for communications with a single satellite hop between the fixed
coverage and the geographical regions covered by the steerable coverages. Figures 35 and 36 show examples of
steerable beam pointing. With the possibility to establish communications within each of the steerable beams,
W5 also offers an effective means to set up communications networks either on a national or regional level.
The W Satellites
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Beacons
W1 carries two tracking beacons (B1 and B2). W2 carries three tracking beacons (B1 and B2 for the fixed beam,
and B3 for the steerable beam). W3 carries two tracking beacons (B2 for the fixed beam and B3 for the steerable
beam). W3A carries three tracking beacons in Ku-band (B1 for the Europe Service Areas A & B, B2 and B3
with a global earth coverage) and one tracking beacon in Ka-band for the Europe Service Area C. W4 carries a
single beacon (B1). W5 carries three tracking beacons (B1 and B2 for the fixed beam, and B3 for the steerable
beam). All beacons operate in X polarization. The beacon frequencies are given in the following table:
W1 W2 W3 W3A W4 W5
Beacon B1/(TM+RG)*
(MHz)
11 450.500 or
11 451.000
11 698.000 or
11 699.200
- 11 699.800 or
11 700.400
11 706.850 11 451.091 or
11 452.570
Beacon B2 (MHz) 12 500.250 and
12 749.750
12 501.000 12 501.000 12 500.500 12 501.000
Beacon B3 (MHz) 11 199.000 11 199.500 11 200.000 11 200.000
Beacon in Ka-band (MHz) - - - 21 404.000 -
* Frequency selectable by ground command.
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Satellite Implementation
The W1 satellite has been built by the former Matra Marconi Space based in France and the UK. The prime
interface as well as satellite integration and test is with the former Matra Marconi Space based in Toulouse, the
communications repeater is delivered by Matra Marconi Space based in the UK, while the fixed antennas are
built by Matra Marconi Space based in Stevenage. The bus subsystems are furnished by Matra Marconi Space
Toulouse and Stevenage.
The satellite design is compatible with the Ariane 4/5 family launched from Kourou, the Atlas II series launched
from Cape Canaveral and Proton launched from Baikonur.
W1 is based on the three-axis stabilized EUROSTAR 2000 PLUS platform. W1 is shown in Figure 37 in its in-
orbit configuration with solar panels and side mounted communications antennas deployed. These 2.5 m
diameter antennas, which provide the fixed transmit and receive coverages, are of compact geometry Gregorian
design with shaped main reflectors. As mentioned previously, the top-mounted transmit/receive steerable
antenna may be steered anywhere over the visible earth and the elliptical footprint may be rotated by up to ±90
degrees. This antenna has a shaped main reflector and a shaped sub-reflector and it is supplied by Alenia
Aerospazio of Italy.
The satellite is modular in concept with the service module housing the platform subsystems including the
propellant and pressurant tanks, the latter located in the main load-bearing central cylinder. The North/South
walls and the earth facing panels constitute the communications module and accommodate the repeater
equipment.
The W2, W3 and W4 satellites have been built by an international consortium led by the former Aerospatiale of
France (Alcatel Space at present) as the prime contractor and includes DASA of Germany, Alenia Aerospazio of
Italy and Space Systems/Loral of the United States as the main subcontractors. Alcatel Space has provided
various platform subsystems as well as satellite integration and test and launch site activities. DASA has
manufactured the solar array, attitude control and propulsion subsystems. Alenia Aerospazio has delivered the
fixed and steerable antennas (for W2 and W3) and the RF portion of the TCR subsystem. Space Systems/Loral
has provided the communications repeater. Saab Ericsson Space has provided the steerable antenna for W4.
The satellite design is compatible with the Ariane 4/5 family launched from Kourou, the Atlas II series launched
from Cape Canaveral and Proton launched from Baikonur.
W2, W3 and W4 are based on the three axis stabilized SPACEBUS 3000 platform. W2 is shown in Figure 38 in
its launch configuration with stowed solar panels, side mounted communications antennas and top mounted
steerable antenna. These 1.8 m diameter antennas, one for transmit and the other for receive, are dual-gridded
and shaped. The top-mounted, transmit/receive steerable antenna, may be steered , as mentioned above,
anywhere over the visible earth and the elliptical footprint may be rotated ±90 degrees. These antennas have
shaped main reflectors and subreflectors.
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The satellite is modular in concept with the service module housing the platform subsystems and the central
cylinder accommodating the propellant tanks. The North/South walls and the earth facing panel house the
communications equipment. The attitude and orbit control subsystem provides inclined orbit, extended lifetime
operation. The EUTELSAT Satellite Control Centre performs the on-station operations.
The W3 satellite is outwardly similar to the W2 satellite. The W5 satellite is outwardly similar to the W2 and
W3 satellites apart from having a two steerable antennas on the earth panel instead of one.
The W3A satellite is built by Astrium. Astrium Toulouse are responsible for the prime contractor engineering
as well as satellite integration and test. Astrium Portsmouth are responsible for the communications repeater and
Astrium Stevenage for the antenna. The top floor antennas have been subcontracted to EMS, Canada.
The satellite is based on a Eurostar 3000 platform with classical chemical propulsion and is designed to be
compatible with Ariane, Atlas, Proton, Delta and Sea Launch. It comprises a single deck communications
module for the repeater equipment and a service module housing most of the platform equipment.
There are two deployable antennas of dual gridded design with 2m reflector appertures. Europe A transmit
antenna is the East face deployable antenna and the Europe A receive antenna is the West face deployable
antenna. The top floor carries three communications antennas on a tower - a 1m Gregorian antenna and two
1.4m dual gridded reflectors. The 1m Gregorian provides the C coverage (Ku/ka). The 1.4 m dual gridded
reflectors provide Europe B and African coverages as follows:
a) Europe B transmit front (X) , rear Africa receive (Y)
b) Europe B transmit front (Y) , rear Africa transmit (X)
The satellite can operate up to 40 transponders (40 Ku or 38 Ku + 2 Ka) at saturation including 4 SKYPLEX
units throughout its operational lifetime and can also operate 50 channels and 5 SKYPLEX units with back-off
over the operational lifetime.
Power is provided by two solar array wings, each with 5 deployable panels populated with high efficiency
silicon cells and triple junction Ga As cells. In eclipse, power is provided by two Li-Ion batteries. The bus is
fully regulated at 50V.
The data handling and attitude determination and control functions are integrated into a common computer. The
telemetry command and ranging subsystem uses S-band for transfer orbit and emergencies and Ku band for
nominal on-station operations.
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The W4 satellite is shown in Figure 39 in its launch configuration with stowed solar panels, side mounted
communications antennas and top mounted steerable antenna. The circularly polarized Russian coverage
antenna has a single surface shaped reflector, a single feed and polarizer. The linearly polarized African
coverage antenna uses a dual gridded, shaped reflector with a dual feed. The steerable antenna is of a Gregorian
design with shaped main reflector and sub-reflector.
The W Satellites
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11.45 GHz 11.70 GHz10.95 GHz 11.20 GHz 12.50 GHz 12.75 GHz
13.75 GHz 14.00 GHz 14.25 GHz 14.50 GHz
11 473.060
11 539.770
11 606.630
11 668.880
11 473.060
11 539.770
11 606.630
11 668.880
10 991.67010 991.670
11 075.00011 075.000
11 158.33011 158.330
12 541.67012 541.670
12 625.00012 625.000
12 708.33012 708.330
13 773.060
13 839.770
13 906.630
13 968.880
13 773.060
13 839.770
13 906.630
13 968.880
14 041.67014 041.670
14 125.00014 125.000
14 208.330/14 199.330
14 208.330
14 291.67014 291.670
14 375.00014 375.000
14 458.33014 458.330
2.3 GHz 1.5 GHz3.3 GHz
D1 D3 D5 D7
D2 D4 D6 D8
D1S D3S D5S D7S
D2S D4S D6S D8S
B1
B2
B3
B4
B5
B6
F1
F2
F3
F4
F5
F6
D2 D4 D6 D8
D1 D3 D5 D7
D2S D4S D6S D8S
D1S D3S D5S D7S
F2
F1
F4
F3
F6
F5
B2
B1
B4
B3
B6
B5
Fixed Coverage
Steerable Coverage
Fixed or Steerable Coverage (uplink only)
Fixed and/or Steerable Coverage (uplink only)
11 450.50011 451.000
B1
12 500.250
B2a
12 749.750
B2b
X
Y
X
Y
Figure 1. EUTELSAT W1 Frequency Plan (Frequencies in MHz)
The W Satellites
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W1RxFx.dsf
- 5 dB/K
- 3 dB/K
0 dB/K + 1 dB/K + 2 dB/K
+ 3 dB/K
+ 4 dB/K
- 5 dB/K
0 dB/K
0 dB/K
+ 1 dB/K
+ 2 dB/K
Figure 2 . Illustration of W1 Receive Coverage (10° East)
The W Satellites
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W1Wide.dsf
38 dBW
38 dBW 40 dBW
43 dBW 45 dBW
45 dBW
45 dBW
46 dBW
47 dBW 48 dBW
Figure 3. Illustration of W1 Transmit Coverage (10° East)
The W Satellites
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+ 9 dB/K
+ 8 dB/K
+ 7 dB/K + 6 dB/K
+ 4 dB/K
+ 2 dB/K
0 dB/K - 2 dB/K
- 4 dB/K
- 6 dB/K
- 8 dB/K
Figure 4 . Illustration of W1 Receive Steerable Coverage (10° East)
The W Satellites
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52 dBW
51 dBW
50 dBW
49 dBW
48 dBW
46 dBW
44 dBW
42 dBW
40 dBW
38 dBW
Figure 5 . Illustration of W1 Transmit Steerable Coverage (10° East)
The W Satellites
w_(iss6.3_jan03).doc - 20 -13 167.00
UPLINK
DOWNLINK
13.00 GHz
Pol. X
Pol. Y
13.25 GHz 14.00 GHz 14.25 GHz 14.50 GHz13.75 GHz
11.20 GHz 11.45 GHz 11.70 GHz10.95 GHz 12.50 GHz 12.75 GHz
Pol. X
Pol. Y
D9 F2 F4 F6
F1 F3 F5
B2 B4 B6
B1 B3 B5
B1 B3 B5
B2 B4 B6
F1 F3 F 5
F2 F4 F 6D9
10 991.67
11 075.00
11 158.33
11 241.50
11 324.50
11 407.50
12 541.67
12 625.00
12 708.33
10 991.67
11 075.00
11 158.33
11 220.75
11 262.25
11 303.75
11 658.33
12 541.67
12 625.00
12 708.33
14 291.67
14 375.00
14 458.33
14 291.67
14 375.00
14 458.33
13 021.75
13 104.75
13 187.75
13 042.50
13 125.50
13 208.50
13 771.41
13 854.41
13 958.33
13 792.16
13 875.16
13 958.16
14 041.67
14 125.00
14 208.33
14 041.67
14 125.00
14 208.33
Switchable to Steerable Beam
D2 D4 D6 D8 D10
13 833.66
13 916.66
13 895.91
13 812.91
C2 C4 C6 C8 C10 C12
C1 C3 C5 C7 C9 C11
11 512.91
11 595.91D1 D3 D5 D7
11 471.41
11 554.41
C1 C3 C5 C7 C9 C11
C2 C4 C6 C8 C10 C12 D2 D4 D6 D8 D10
13 084.00
13 001.00
13 063.25
13 146.25
13 229.25
D1 D3 D5 D7
11 449.00
11 492.16
11 533.66
11 575.16
11 616.66
11 658.16
11 283.00
11 366.00
11 345.25
11 386.75
11 428.25
Figure 6 . EUTELSAT W2 Frequency Plan (Frequencies in MHz)
The W Satellites
w_(iss6.3_jan03).doc - 21 -
-5 dB/K -3 dB/K
0 dB/K +2 dB/K
+4 dB/K
+5 dB/K
W2RXFX.DCr
Figure 7 . Illustration of W2 Receive Coverage (16° East)
The W Satellites
w_(iss6.3_jan03).doc - 22 -
40 dBW
43 dBW
45 dBW
47 dBW49 dBW50 dBW
W2WIDE.DCr
Figure 8 . Illustration of W2 Transmit Coverage (16° East)
The W Satellites
w_(iss6.3_jan03).doc - 23 -
-4 dB/K
-2 dB/K 0 dB/K
+2 dB/K
+4 dB/K
+6 dB/K
+8 dB/K
+10 dB/K
W2STRRX.DCr
Figure 9 . Illustration of W2 Steerable Spot Receive Coverage (16° East)
The W Satellites
w_(iss6.3_jan03).doc - 24 -
42 dBW
46 dBW
49 dBW
51 dBW
52 dBW
40 dBW
W2STRTX.DCr
Figure 10 . Illustration of W2 Steerable Spot Transmit Coverage (16° East)
The W Satellites
w_(iss6.3_jan03).doc - 25 -
D9
13 167.00
UPLINK
DOWNLINK
13.00 GHz
Pol. X
Pol. Y
13.25 GHz 14.00 GHz 14.25 GHz 14.50 GHz13.75 GHz
11.20 GHz 11.45 GHz 11.70 GHz10.95 GHz 12.50 GHz 12.75 GHz
Pol. X
Pol. Y
F2 F4 F6
F1 F3 F5
B2 B4 B6
B1 B3 B5
B1 B3 B5
B2 B4 B6
F1 F3 F5
F2 F4 F6
D9
10 991.67
11 075.00
11 158.33
11 241.50
11 324.50
11 407.50
12 541.67
12 625.00
12 708.33
10 991.67
11 075.00
11 158.33
11 220.75
11 262.25
11 303.75
11 658.33
12 541.67
12 625.00
12 708.33
14 291.67
14 375.00
14 458.33
14 291.67
14 375.00
14 458.33
13 021.75
13 104.75
13 187.75
13 042.50
13 125.50
13 208.50
13 771.41
13 854.41
13 958.33
13 792.16
13 875.16
13 958.16
14 041.67
14 125.00
14 208.33
14 041.67
14 125.00
14 208.33
Switchable to Steerable Beam
D2 D4 D6 D8 D10
13 833.66
13 916.66
13 895.91
13 812.91
C2 C4 C6 C8 C10 C12
C1 C3 C5 C7 C9 C11
11 512.91
11 595.91D1 D3 D5 D7
11 471.41
11 554.41
C1 C3 C5 C7 C9 C11
C2 C4 C6 C8 C10 C12 D2 D4 D6 D8 D10
13 084.00
13 001.00
13 063.25
13 146.25
13 229.25
D1 D3 D5 D7
11 449.00
11 492.16
11 533.66
11 575.16
11 616.66
11 658.16
11 283.00
11 366.00
11 345.25
11 386.75
11 428.25
Figure 11 . EUTELSAT W3 Frequency Plan (Frequencies in MHz)
The W Satellites
w_(iss6.3_jan03).doc - 26 -
W3RxFx.DCr
-5 dB/K -3 dB/K
0 dB/K+2 dB/K
+4 dB/K
+3 dB/K
+5 dB/K
Figure 12 . Illustration of W3 Receive Coverage (7° East)
The W Satellites
w_(iss6.3_jan03).doc - 27 -
40 dBW
43 dBW45 dBW
47 dBW
48 dBW
47 dBW
47 dBW48 dBW
45 dBW
W3WIDE.DCr
Figure 13 . Illustration of W3 Transmit Coverage (7° East)
The W Satellites
w_(iss6.3_jan03).doc - 28 -
-4 dB/K
-2 dB/K
0 dB/K
+2 dB/K
+4 dB/K
+6 dB/K
+8 dB/K
+9 dB/K
W3STRRX.DCr
Figure 14 . Illustration of W3 Steerable Spot Receive Coverage (7° East)
The W Satellites
w_(iss6.3_jan03).doc - 29 -
42 dBW
46 dBW
51 dBW
52 dBW
40 dBW
53 dBW
50 dBW
48 dBW
44 dBW
49 dBW
W3STRTX.DCr
Figure 15. Illustration of W3 Steerable Spot Transmit Coverage (7° East)
The W Satellites
w_(iss6.3_jan03).doc - 30 -
C1
H1 H2 H3 H4 H5 H6
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
G1 G2
B1
B2 B4
B1 B3
B3
B2 B4
F2
D9D1 D3 D5 D7
D2 D4 D6 D8 D10
F4 F6
F1 F3 F5
F1 F3 F5
F2 F4 F6
B6
B5
B5
B6
C2
D9
D2 D4 D6 D8 D10
D1 D3 D5 D7
13 167.00
UPLINK
DOWNLINK
13.00 GHz 13.25 GHz 14.00 GHz 14.25 GHz 14.50 GHz13.75 GHz
11.20 GHz 11.45 GHz 11.70 GHz10.95 GHz 12.50 GHz 12.75 GHz
10 991.67
11 075.00
11 158.33
11 241.50
11 324.50
11 407.50
12 541.67
12 625.00
12 708.33
10 991.67
11 075.00
11 158.33
11 220.75
11 262.25
11 303.75
11 637.41
14 291.67
14 375.00
14 458.33
13 021.75
13 104.75
13 187.75
13 042.50
13 125.50
13 208.50
13 771.41
13 854.41
13 937.41
13 792.16
13 875.16
13 970.00
14 041.67
14 125.00
14 208.33
13 833.66
13 916.66
13 895.91
13 812.91
C4 C6 C8 C10 C12
C1 C3 C5 C7 C9 C11
11 512.91
11 595.91
11 471.41
11 554.41
C3 C5 C7 C9 C11
C2 C4 C6 C8 C10 C12
13 084.00
13 001.00
13 063.25
13 146.25
13 229.25
11 449.00
11 492.16
11 533.66
11 575.16
11 616.66
11 670.00
11 283.00
11 366.00
11 345.25
11 386.75
11 428.25
18.10 GHz 18.40 GHz
10.70 GHz
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
1.78 GHz 2.30 GHz 3.30 GHz 7.45 GHz
J2
27.50 GHz 28.60 GHz
21.40 GHz 22.00 GHz
-7.40 GHz
J1 G3
H1 H2 H3 H4 H5 H6
G1 G2
J2J1
Possible use of Skyplex
1.50 GHz 15.00 GHz
14 062.00
14 187.00
14 291.67
14 375.00
14 458.33
21 462.00
21 587.00
12 520.75
12 562.25
12 603.75
12 645.25
12 686.75
12 728.25
10 720.75
10 762.25
10 803.75
10 845.25
10 886.75
10 928.25
SKPX SKPX
SKPX SKPX
SKPX
SKPXSKPX
SKPX
18 170.75
18 212.25
18 253.75
18 295.25
18 336.75
18 378.25
27 520.75
27 562.25
27 603.75
27 645.25
27 686.75
27 728.25
SKPX SKPX
SKPX:
SKPX SKPX
D11
11 678.91
D11
13 978.91
G3
Pol. X
Pol. Y
Pol. X
Pol. Y
SKPX SKPX
SKPX SKPX
EUROPE A EUROPE A EUROPE A EUROPE A
EUROPE A EUROPE A EUROPE AEUROPE B
EUROPE C
AFRICA AFRICA
AFRICAAFRICA
EUROPE C
EUROPE CEUROPE A/B
W3A_Fp_06-03-01.dsf
Figure 16. EUTELSAT W3A Frequency Plan (Frequencies in MHz)
The W Satellites
w_(iss6.3_jan03).doc - 31 -
W3RxFx.DCr
-5 dB/K -3 dB/K
0 dB/K+2 dB/K
+4 dB/K
+3 dB/K
+5 dB/K
Figure 17. The expected Uplink European A Service Area of W3A at 7° East (equivalent to the W3 uplink performance)
The W Satellites
w_(iss6.3_jan03).doc - 32 -
40 dBW
43 dBW45 dBW
47 dBW
48 dBW
47 dBW
47 dBW48 dBW
45 dBW
W3WIDE.DCr
Figure 18. The expected Downlink European A Service Area of W3A at 7° East (equivalent to the W3 downlink performance)
The W Satellites
w_(iss6.3_jan03).doc - 33 -
Figure 19. The expected European B Service area of W3A at 7° East.
(Contours A, B, C, D, E and F correspond to 51 dBW, 50 dBW, 49 dBW, 46 dBW, 43 dBW and 41 dBW)
The W Satellites
w_(iss6.3_jan03).doc - 34 -
Figure 20 The expected European C Service area on the uplink of Channels A of W3A at 7° East.
(Contours A, B, C, D, E and F correspond to 6 dB/K, 5 dB/K, 4 dB/K, 3 dB/K, 2 dB/K and 0 dB/K)
The W Satellites
w_(iss6.3_jan03).doc - 35 -
Figure 21. The expected European C Service area on the downlink of Channels J of W3A at 7° East.
(Contours A, B, C, D, E, F and G correspond to 53 dBW, 52 dBW, 51 dBW, 50 dBW, 49 dBW, 48 dBW, and 46 dBW)
The W Satellites
w_(iss6.3_jan03).doc - 36 -
Figure 22. The expected European C Service area on the uplink of Channels H of W3A at 7° East.
(Contours A, B, C, D, E, F and G correspond to 7 dB/K, 6 dB/K, 5 dB/K, 4 dB/K, 3 dB/K, 2 dB/K, and 0 dB/K)
The W Satellites
w_(iss6.3_jan03).doc - 37 -
Figure 23. The expected African Service Area of W3A at 7° East.
(Contours A, B, C and D correspond to 45 dBW; -1 dB/K, 44 dBW; -2 dB/K, 42 dBW; -4 dB/K, 40 dBW; -6 dB/K)
The W Satellites
w_(iss6.3_jan03).doc - 38 -
1 19 25 27 29 31 33 35 37 39
26 28 30 32 34 36 38 40
1 19 25 27 29 31 33 35 37 39
26 28 30 32 34 36 38 40
17 327.48
17 672.72
17 787.80
17 826.16
17 864.52
17 902.88
17 941.24
17 979.60
18 017.96
18 056.32
18 075.50
18 037.14
17 998.78
17 960.42
17 922.06
17 883.70
17 845.34
17 806.9812 206.98
12 245.34
12 283.70
12 322.06
12 360.42
12 398.78
12 437.14
12 475.50
11 727.48
12 072.72
12 187.80
12 226.16
12 264.52
12 302.88
12 341.24
12 379.60
12 417.96
12 456.32
17.3 GHz 18.1 GHz
RHC
LHC
RHC
LHC
12.5 GHz11.7 GHz
UPLINK
DOWNLINK
21
2117 711.08
12 111.08
Figure 24 . EUTELSAT W4 Frequency Plan – “Russian” Channels (Frequencies in MHz)
The W Satellites
w_(iss6.3_jan03).doc - 39 -
2 10 20 22 24 26 30 32 34 36 38 40
2 10 20 22 24 26 30 32 34 36 38 40
17 691.90
17.3 GHz 18.1 GHz
X
Y
X
Y
12.5 GHz11.7 GHz
UPLINK
DOWNLINK
17 346.66
17 500.10
17 730.26
17 768.62
17 806.98
17 883.70
17 922.06
17 960.42
17 998.78
18 037.14
18 075.50 /18 072.50
11 746.66
11 900.10
12 091.90
12 130.26
12 168.62
12 206.98
12 283.70
12 322.06
12 360.42
12 398.78
12 437.14
12 475.50 /12 472.50
Fixed African coverage or Steerable coverage (block-switched)
Fixed African coverageSteerable coverage
Figure 25 . EUTELSAT W4 Frequency Plan – “African/Steerable” Channels (Frequencies in MHz)
The W Satellites
w_(iss6.3_jan03).doc - 40 -
W4RUSRx.dsf
+ 7 dB/K + 6 dB/K
+ 4 dB/K
+ 2 dB/K 0 dB/K
- 2 dB/K
+ 9 dB/K
+ 9 dB/K + 12 dB/K
Figure 26 . Illustration of W4 Russian Receive Coverage (36° East)
The W Satellites
w_(iss6.3_jan03).doc - 41 -
W4RUSTx.dsf
52 dBW
51 dBW
50 dBW
48 dBW
46 dBW
44 dBW 42 dBW
Figure 27 . Illustration of W4 Russian Transmit Coverage (36° East)
The W Satellites
w_(iss6.3_jan03).doc - 42 -
W4AfrRx.dsf
- 5 dB/K
- 2 dB/K
0 dB/K
2 dB/K
- 5 dB/K
- 2 dB/K
0 dB/K
2 dB/K
Figure 28 . Illustration of W4 African Receive Coverage (36° East)
The W Satellites
w_(iss6.3_jan03).doc - 43 -
W4AfrTxLo.dsf
36 dBW
40 dBW
42 dBW
44 dBW
36 dBW
40 dBW42 dBW
44 dBW
Figure 29 . Illustration of W4 African Transmit Coverage, Channels 30 to 36 (36° East)
The W Satellites
w_(iss6.3_jan03).doc - 44 -
W4AfrTxHi.dsf
36 dBW
40 dBW
42 dBW
44 dBW
45 dBW
36 dBW
40 dBW
42 dBW 44 dBW 45 dBW
Figure 30 . Illustration of W4 African Transmit Coverage, Channels 38 and 40 (36° East)
The W Satellites
w_(iss6.3_jan03).doc - 45 -
55 dBW
54 dBW
52 dBW
50 dBW
48 dBW
44 dBW 40 dBW
Figure 31 . Illustration of W4 Transmit Steerable Coverage (36° East)
The W Satellites
w_(iss6.3_jan03).doc - 46 -
UPLINK
DOWNLINK
13.00 GHz
Pol. X
Pol. Y
13.25 GHz 14.00 GHz 14.25 GHz 14.50 GHz13.75 GHz
11.20 GHz 11.45 GHz 11.70 GHz10.95 GHz 12.50 GHz 12.75 GHz
Pol. X
Pol. Y
H2 / D2 H4 / D4 H6 / D6
H1 / D1 H3 / D3 D5
F2 / G2 F4 / G4 F6 / G6
F1 / G1 F3 / G3 F5
C2 C4 C6
C1 C3 C5
B2 B4 B6
B1 B3 B5
B1 B3 B5
B2 B4 B6
C1 C3 C5
C2 C4 C6
H1 / F1 H3 / F3 F5
H2 / F2 H4 / F4 H6 / F6G6 / D6G4 / D4G2 / D2
G1 / D1 G3 / D3 D5
10 991.67
11 075.00
11 158.33
11 241.67
11 325.00
11 408.33
11 491.67
11 575.00
11 658.33
12 541.67
12 625.00
12 708.33
10 991.67
11 075.00
11 158.33
11 241.67
11 325.00
11 408.33
11 491.67
11 575.00
11 658.33
12 541.67
12 625.00
12 708.33
14 291.67
14 375.00
14 458.33
14 291.67
14 375.00
14 458.33
13 041.67
13 125.00
13 208.33
13 041.67
13 125.00
13 208.33
13 791.67
13 875.00
13 958.33
13 791.67
13 875.00
13 958.33
14 041.67
14 125.00
14 208.33
14 041.67
14 125.00
14 208.33
Switchable to Steerable 1
Switchable to Steerable 2
Figure 32 . EUTELSAT W5 Frequency Plan (Frequencies in MHz)
The W Satellites
w_(iss6.3_jan03).doc - 47 -
0° 5° 10° 15° 20°
+ 4 dB/K
+ 3 dB/K
+ 2 dB/K
0 dB/K
- 2 dB/K
- 4 dB/K
- 6 dB/K
Figure 33. Illustration of W5 receive coverage (70.5° E)
The W Satellites
w_(iss6.3_jan03).doc - 48 -
0° 5° 10° 15° 20°
48 dBW
47 dBW
46 dBW 46 dBW
47 dBW
47 dBW 44 dBW
42 dBW 40 dBW
38 dBW
44 dBW
Figure 34. Illustration of W5 transmit coverage (70.5° E)
The W Satellites
w_(iss6.3_jan03).doc - 49 -
0° 5° 10° 15° 20°
Figure 35. Examples of W5 Steerable Receive Coverage (-4, -2, 0, +2, +4, +6, +8 & +9 dB/K) (70.5° East)
The W Satellites
w_(iss6.3_jan03).doc - 50 -
0° 5° 10° 15° 20°
Figure 36. Examples of W5 Steerable Transmit Coverage, (40, 42, 44, 46, 48, 50, 52 & 53 dBW) (70.5° East)
The W Satellites
w_(iss6.3_jan03).doc - 51 -
Figure 37 . W1 in-orbit
The W Satellites
w_(iss6.3_jan03).doc - 52 -
Figure 38 . W2 Stowed for launch
The W Satellites
w_(iss6.3_jan03).doc - 53 -
Figure 39 . W4 Stowed for launch
