GNSS SDR Based on Multi-channel Multi-Band Multi-System RFFE IC

Dmitri Tcherniakovski, Konstantin Veprev, Nikolai Filippov, Anastasiya Tsikhamirava

Abstract:	The article describes GNSS SDR project: Multi-channel Multi-Band Multi-System Global Navigation Satellite System Software-defined Radio (GNSS SDR) based on four-channel NT1065 “Nomada” RF Front-End (RFFE) IC. This project is intended to motivate research of high precision and anti-jamming for all known GNSS signals. GNSS SDR receiver works with all known GNSS signals. It is able to operate simultaneously with any combination of GPS, GLONASS, Galileo, BeiDou, IRNSS, QZSS in L1, L2, L3, L5, E1, E5a, E5b, E6, B1 C, B1I(Q), B1- 2I(Q), B2, B3 frequency bands. GNSS SDR can also track BPSK, BOC and AltBOC signals. Each setting, including output signal frequency bandwidth, AGC options, mirror channel suppression option, etc., can be set for each channel individually. RFFE includes two fully independent frequency synthesizers. For specific applications there is an option to feed all four channels with single LO source. RFFE is fabricated on AMS 0.35µm BiCMOS technology. GNSS SDR is able to receive 4 coherent channels of CRPA with beam gain up to 6 dB. Array processing is capable to reject multiple interferers. In this study we give examples of application flexibility – from single-chip wide band signals acquisition to coherent four-channel reception of same navigation signal (beamforming).
Published in:	Proceedings of the 29th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2016) September 12 - 16, 2016 Oregon Convention Center Portland, Oregon
Pages:	120 - 127
Cite this article:	Tcherniakovski, Dmitri, Veprev, Konstantin, Filippov, Nikolai, Tsikhamirava, Anastasiya, "GNSS SDR Based on Multi-channel Multi-Band Multi-System RFFE IC," Proceedings of the 29th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2016), Portland, Oregon, September 2016, pp. 120-127. https://doi.org/10.33012/2016.14583
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