GNSS Test Receiver: Interference Case Study.
GNSS Test Receiver: Interference Case Study.
GNSS Test Receiver: Interference Case Study.
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Janvierr 2013
SOMMAIRE
M3 systems GNSS context Interference environment DME/TACAN test case VST based integrated test bench Conclusions Questions
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Janvierr 2013
Engineering services
Satellite navigation (GNSS) Air trafic management
Products
airport (e-TrackAir) Galileo receiver & signal generator
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Conception
Achievement
Mechanical
Electronic
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Airport product: e-TrackAir EGNOS based Navigation solution for airport vehicule operating in the manoeuvring area Reduction of runway incursion risks Record & Replay trajectories (runway inspection) Generation of mission reports
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Performance evaluation
Data collection
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GALILEO IOV
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GALILEO deployment
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Impact of DME on GNSS receivers - Degradation of C/N0 ( Blue curve) - Increased errors in pseudo-distance (Green curve) - Loss of tracking in some test scenario
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Reference model
Missions Applications
Contrle/Commande
Contrle/Commande
Interfaces de communication
Interferences
Hybridation
Navigation
Navigation
BB signal processing
SiS I/Q generation
Erreurs
BB signal processing
Poursuite Dmodulation Acquisition Corrlation
RF processing
RF processing
Simulateur
Navigateur
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GALILEO
GPS
GLONASS
Correlation
E1/L1
E6 Front End
E5/L5
L2
RF Signals
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GNSS functions integration Integration of GNSS IPs into the VST platform to provide modular & configurable solutions :
Existing IP (FPGA Spartan 6) Intgrated GNSS test bench 22octobre octobre2012 2012 22
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Hardware/Software partitionning
PC Host / LabView
VI VST HMI (NI)
VST Board
FPGA device
VST CTRL (NI)
RF input
Clock
P X I e
Receiver core
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RADIO-SOFTWARE APPROACH THAT ENABLES HIGH FLEXIBILITY AND MODULARITY THROUGH LABVIEW ENVIRONMENT;
FPGA CAPABILITIES TO ACCESS HIGH REAL TIME PERFORMANCES IN PARTICULAR TO IMPLEMENT LOW LEVEL PROCESSING CAPABILITIES (E.G., DEMODULATION AND CORRELATION).
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CONCLUSIONS
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VST technology enables high performance software radio implementation M3 Systems is using these capabilities to cover multiple GNSS use cases We open the way towards affordable & configurable solutions to support GNSS research & industry.
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Key features
Analyse real signals (log & replay) Generate GNSS signals, including interferences Assess receivers performances, including innovative algorithms Flexible & modular : multi-constellation & multi-frquency by software configuration
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