3. Introduction to Testing with Galileo
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Transcript of 3. Introduction to Testing with Galileo
Galileo testingWhereCamp 2016 Berlin
3 November 2016, Germany
M. Bavaro, European Commission JRC
Motivation:• Context
‒ GSA coordinating two test campaigns‒ Mass-market receivers tests carried out by ESA‒ Professional receivers tests supported by EC JRC‒ Confidentiality of the results
• Objectives‒ Supporting early introduction of Galileo in COTS receivers‒ Assessing Galileo readiness to fully exploit the system
potentialities‒ Getting recommendations from the Galileo user community
Precision receivers tests 2014/2015
• Record & Playback• Interference analysis in the
EMSL, time differed zero baseline
• Simulated• Multiple frequency
interference analysis, time differed zero baseline
• Live tests• Static multipath
characterisation using post-processing and bespoke SDR receivers
• Dynamic signal tracking performance analysis
Test categories and KPIs
Anechoic chamber
Interference
GPS + GAL E1/E5/E6
Anechoic Chamber Tests with GSS9000
Calibrated, noise free output (from the simulator back panel) guarantees nominal reception power (i.e. -130 dBm for L1 C/A) at the antenna allowing use of ambient noise
Simulator Reference Visibility
• Triple frequency GPS+Galileo scenario starting on March 16th 2014
• 400 minutes divided in 4 interference time-slots: E5a, E5b, E6 and E1
• RFI ramps shown below:
-10
MHz
-1 M
Hz
0 M
Hz
+1 M
Hz
+10
MHz
-10
MHz
-1 M
Hz
0 M
Hz
+1 M
Hz
+10
MHz
-10
MHz
-1 M
Hz
0 M
Hz
+1 M
Hz
+10
MHz
-10
MHz
-1 M
Hz
0 M
Hz
+1 M
Hz
+10
MHz
E5a/L5 E5b E6 E1/L1
E1/L1 Chirp 40 MHz 100 µs -70 dBm-1
0 M
Hz
-1 M
Hz
Cent
er
+1 M
Hz
+10
MHz
-10
MHz
-1 M
Hz
Cent
er
+1 M
Hz
+10
MHz
Nominal Position Accuracy• Static, No Interference, Simulated Scenario• Multi-frequency, GPS+Galileo D-GNSS• Replay in anechoic chamber and/or conducted mode
Max Min AVG
Mean pos. [m]GPS 0.410 0.010 0.126GAL 0.370 0.005 0.119COMB 0.240 0.002 0.063
STD pos. [m]GPS 2.380 0.160 1.287GAL 1.380 0.040 0.620COMB 1.120 0.030 0.440
Sat. avail.[%]GPS 95.00 60.00 86.75GAL 96.00 76.90 84.73COMB 95.00 68.50 85.90
Live SIS Land Mobile Scenario• Ispra Site• Reference track
15 km long• 13 March 2015
PV Accuracy– Live Land Mobile• Multi-frequency, GPS+Galileo D-GNSS• Novatel SPAN reference system• Galileo-only solution not possible on March 13th, 2015
Max Min AVG
Mean pos. [m]GPS 5.80 0.60 1.82COMB 2.80 0.68 1.34
STD pos. [m]GPS 7.90 1.30 3.12COMB 7.90 1.20 3.10
Mean vel. [cm/sec]GPS 1.70 0.59 1.12COMB 1.80 0.66 1.17
STD vel. [cm/sec]GPS 77.00 59.00 68.20COMB 76.00 56.00 67.50
Pos. fix avail. [%]GPS 97.00 85.00 92.20COMB 95.00 85.00 91.00
• Extensive campaign with seven precision receivers successfully completed
• Some mature products, other under development• Fruitful interaction with all manufacturers, all
extremely supportive• Residuals of GAL E1 smaller than those of GPS L1• Combined (GPS+GAL) PV better both in nominal and
interference scenarios
Conclusions