A USRP2-Based Multi-Constellation and Multi-Frequency GNSS Software Receiver for Ionosphere Scintillation Studies

S. Peng, Y. Morton

Abstract:	USRP2 is a versatile general purpose radio frequency front end. When integrated with appropriate daughter boards, USRP2 can be used to collect RF data covering the entire GNSS family of signals. This paper presents a multi-constellation, multi-band GNSS receiver front end data collection system based on USRP2. Three popular daughter boards were evaluated to demonstrate that the narrow band RFX series boards have better performance compared to the wideband DBSRX. Software receiver processing algorithms were applied to data collected simultaneously by the USRP2 front end and TRIGR, a high performance instrumentation quality front end built at Ohio University. The results show that the USRP2 front end typically generates C/N0 at 1~3 dB below that of the TRIGR, and that the carrier phase fluctuations are similar from both front ends for most signals. The USRP2 front was also successfully used to collect and track GLONASS L1 signals.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	1033 - 1042
Cite this article:	Peng, S., Morton, Y., "A USRP2-Based Multi-Constellation and Multi-Frequency GNSS Software Receiver for Ionosphere Scintillation Studies," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 1033-1042.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In