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- W2203077053 abstract "Global Navigation Satellite Systems (GNSS) signals areoften subjected to both manmade and natural interferences such asRF jamming, ionosphere scintillation, multipath, and signalanomaly. In order to achieve desired navigation applicationperformances, advanced receiver processing or multi-sensorintegration algorithms must be developed to mitigate theseinterferences. A flexible multi-frequency multi-constellation GNSSsignal generator is an important enabler of robust GNSS receiverresearch and development. There is a growing number of companiesthat offer high end GNSS signal simulators or generators. Thesehigh end signal simulators or generators, however, are expensiveand can be cumbersome. This thesis presents a reconfigurablewideband multi-frequency multi-constellation GNSS signal recordingand playback system based on the Universal Software RadioPeripheral (USRP) N210 model. The USRP-N210 based recording andplayback system is low cost, portable, and can be reconfigured torecord and transmit the entire family of GNSS signals when pairedwith appropriate RFX daughter boards and controlled by an externallow phase noise oscillator. The source of the signal can bepre-recorded digital samples obtained from other RF front ends orarbitrary waveform samples generated using MATLAB programs. Anadjustable low noise signal amplifier mounted between the USRP-N210output and the transmitting antenna was used to control thetransmitted power of the signal. A spectrum analyzer was used tomonitor the transmitted signal. The GPS L1, L2, L5, and GLONASS L1and L2 signals were recorded and re-transmitted using themulti-GNSS signal recording and playback system. The receiveroutput and the transmitted signal are processed by both a NovAtelOEM receiver and software receivers and the results are comparedwith the original signal parameters to demonstrate the accuracy ofthe playback system." @default.
- W2203077053 created "2016-06-24" @default.
- W2203077053 creator A5070037173 @default.
- W2203077053 date "2013-01-01" @default.
- W2203077053 modified "2023-09-28" @default.
- W2203077053 title "A USRP-Based Flexible GNSS Signal Recording and Playback System: Performance Evaluation and Study" @default.
- W2203077053 hasPublicationYear "2013" @default.
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