ITU Regional Workshop on SMS4DC for English Speaking countries in Africa, Abuja, Nigeria ,...
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ITU REGIONAL WORKSHOP ON SMS4DC FOR ENGLISH SPEAKING COUNTRIES IN AFRICA,
ABUJA, NIGERIA , 20-31-MAY 2013
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Import Space Radio-communication
Station (SRS) Databaseinto SMS4DC
SMS4DC.EXE.lnk
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Step1: choose (Import from SRS) opting from Database menu
Import (SRS) Databaseinto SMS4DC
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Import from SRS: This item imports information of Earth stations which belong to one or more administrations, into the SMS4DC database. The information source must be an “mdb” file having a data format identical with the BR SRS database format (including space BR IFIC and electronic notices).
As will be displayed in the next slide, choosing this item opens the “SRS import” dialogue box and provides a mask to specify the source database (with mdb extension) and one or more administrations whose Earth station information is to be imported. The browse button enables the user to find the correct “mdb” file location.
After choosing the administration(s) of interest and pushing the “Import” button, SMS4DC displays a Yes/No dialogue screen and the number Earth station records available for import (according to the administrations selected). This screen enables the user to continue or abandon the data import. A progress bar is included at the bottom of the main import screen.
Import (SRS) Databaseinto SMS4DC
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Import (SRS) Databaseinto SMS4DC
Step2: select the MDB source and the administration
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Import (SRS) Databaseinto SMS4DC
Step3: choose (Display selected Stations) option from Databasemenu
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Import (SRS) Databaseinto SMS4DC
Step4: select any number of selected earth stations to be Shown
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How to Create a new earth Station with SMS4DC
SMS4DC.EXE.lnk
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First: Create an Earth Station with generalInformation (Station Information).
Second: Create the Uplink or Downlinkbeams for the Earth Station (AntennaInformation).
Third: Establish the frequencies for eachbeam (Downlink or Uplink)(frequenciesInformation).
Steps to Create a new earth Station with SMS4DC in Brief
Creation of Earth Station
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1: Create Earth Station by pressing and moving earth station symbol button a and place “Earth Stations icon in DEM map.
Add new Earth Station
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2: Set the general parameters of new earth station
Earth Station General Parameters
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3 : Go to Database>> license and find your station under anonymous station to set additional parameters
Earth Station Information (1/2)
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Earth Station Information (2/2)
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4. Right Click on your Earth Station Name and then Press Add Beam in order to establish new Uplink beam
Add Beam (UP)
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Earth Station antenna information
4. Right Click on your Earth Station Name and then Press Add Beam in order to establish new Uplink beam
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Earth Station antenna information
4. Right Click on your Earth Station Name and then Press Add Beam in order to establish new Downlink beam
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By using the “Library” push button, a library of Earth station antenna patterns is opened and the user may select an existing antenna or define a new pattern, using the push button “New Pattern”. A new antenna pattern will be characterized by a set of new coefficients and, after definition, will be added to the library for selection.
Antenna Pattern (1/2)
4. Right Click on your Earth Station Name and then Press Add Beam in order to establish new Uplink beam
Library of antenna patterns of earth station
Entry mask of coefficients for a new antenna pattern
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In case of having no reference coefficients for earth station antenna pattern, the antenna gain values for different offset angles with respect to the antenna main beam direction may be entered directly into the SMS4DC database
Antenna Pattern (2/2)
The earth station antenna pattern definition entry table
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5. Under your Earth Station Name “UAE EARTH STATION NO 1” >> beam: beam 1 Press right click to establish a group of frequencies for the new Uplink.
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5. Under your Earth Station Name “UAE EARTH STATION NO 1” >> beam: beam 1 Press right click
to establish a group of frequencies for the new Uplink.
Description of fields in the entry table of Group Information
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6: Set the emissions for the established group (UL)
Description of fields in the entry table of Emission Information
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Emissions: This item provides a list of emissions in the downlink and uplink directions. Selecting this item opens an entry table to define a multiple emission specification. At the top of table there are three push buttons to add new emissions, to delete registered emissions in the table and to save entered emissions into the database.
Description of fields in the entry table of Emission Information
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7. Right Click on your Earth Station Name “UAE EARTH STATION NO 1” and then Press Add Beam in order to establish new Downlink beam as follows
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9. Under your Earth Station Name “SUDAN EARTH STATION NO 1” >> beam: beam 1 Press right
click to establish a group of frequencies for the new Downlink
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10. Set the emissions for the established group (Downlink).
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11: Set the class of station and nature of service and frequencies for the established group
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Class of Station (1/2)This item sets class of stations and nature of services applicable to the group of beams. Selecting this item opens an entry table to define class of stations and nature of services using the relevant combo box.
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Class of Station (2/2)
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This item sets class of stations and nature of services applicable to the group of beams. Selecting this item opens an entry table to define class of stations and nature of services using the relevant combo box.
Nature of Service
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12. Right Click on your Earth Station Name “UAE EARTH STATION NO 1” and then Press notice in order to create notice
Class of Station
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Earth Station Coordination Contours
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COORDINATION OF EARTH STATIONS WITH RESPECT TO TERRESTRIAL STATIONS
AS WELL AS (other) EARTH STATIONS
When ?• Frequency bands allocated with equal rights to space and terrestrial services or earth stations operating in the Opposite Direction of Transmission (ODT)• The coordination area includes the territory of another
country
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COORDINATION Area and Coordination Contours OF EARTH STATIONS
Appendix 7 of the Radio Regulations (RR)contains the method for the determination of thecoordination area around a transmitting orreceiving earth station that is sharing spectrum infrequency bands between 100 MHz and 105 GHzwith terrestrial radiocommunication services orwith earth stations operating in the oppositedirection of transmission.
Appendix 7 is based on ITU-R SM.1448recommendation
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How to determine the coordination area around an
earth station (1)
The coordination area is determined on the basis of :
1. known characteristics for the coordinating earthstation .
2. Conservative assumptions for the propagation path. 3. Conservative assumptions for the system parameters
for the unknown terrestrial stations, or the unknownreceiving earth.
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How to determine the coordination area around an
earth station (2)
Calculations are performed separately for greatcircle propagation mechanisms(propagationmode (1)) and, if required by the sharing scenariofor scattering from hydrometeors(propagation
mode (2)). The coordination contour is then determined usingthe greater of the two distances predicted by thepropagation mode (1) and propagation mode (2)calculations for each azimuth around thecoordinating earth station.
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Coordination Contours around an earth station
using SMS4DC
SMS4DC.EXE.lnk
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Step one
From Window bar >> Launch IDWM Map1 by selecting IDWM Map1
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From option bar select >> RR appendix 7 >> Earth Station in order to choose the transmitting earth station.
Step Two (1/4)
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Step Two (2/4) From option bar select >> RR appendix 7 >> Earth Station in order to choose the transmitting earth station.
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Step Two (3/4)
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optionally: you may want to view the input file which contains the selected earth station parameters needed to determine the coordination contour
Step Two (4/4)
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Step Three (1/2)From option menu select >> RR appendix 7 >> Draw Contour
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Step Three (1/2)
From option menu select >> RR appendix 7 >> Draw Contour
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optionally you may need to change the contours styles for clarification
Step Four (1/3)
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optionally you may need to change the contours styles for clarification
Step Four (2/3)
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optionally you may need to change the contours styles for clarification
Step Four (3/3)
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optionally: you may want to view the Output file (RESULT.LST) to show details of calculation result
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Step Sixoptionally: you may want to view the Output file (UPD.DAT) to show contour data
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Step Seven
Optionally: you may want to draw these contours on DEM Map
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Inference Calculation using SMS4DC
SMS4DC.EXE.lnk
Earth Stations
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Types of Interference Calculation Interference from selected transmitting earth station to
receiving Fixed terrestrial Stations above 1 GHz.
Interference to selected receiving earth station fromtransmitting Fixed terrestrial Stations above 1 GHz.
Interference from selected transmitting earth stations toreceiving earth stations
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References
Main References
2. ITU Training on Space Services (Bangkok, 24-27 April 2012).
3. ITU SMS4DC Training ( Jordan 2008).
4. SMS4DC V4 manual.
5- ITU-R, Radio Regulation BOOK