Radio Frequency Compatibility Assessment of COMPASS New Signals

L. Zhu, X. Cui, M. Lu, Z. Feng

Abstract:	With the GPS modernizing and new satellite navigation systems developing, more and more signals will occupy L band used for GNSS. The spectra of different signals transmitted overlap each other and the intra- and intersystem interference among navigation signals become severe. Thus, the radio frequency compatibility (RFC) issues become sharp focus. The paper mainly assess interference impact to COMPASS civil receiver functionality and some important RFC numerical results are provided. The goal is to propose methodology and criteria required to execute unbiased RFC assessments. Two distinct considerations of interfering signals contribute to correlator noise floor and the effect of nonzero cross-correlations with replicas of desired signals are measured. The function relation between minimum acceptability thresholds of C/N0 values and the COMPASS civil signals receiving performance, including signal acquisition, carrier tracking, data message demodulation and code tracking, is analyzed in detail, respectively. Moreover, the expected minimum effective C/N0 are measured according to ITU criteria. Based on the comparison of the lower bound to effective C/N0 that COMPASS receiver needed for processing pertinent signals with numerical acceptability thresholds, the allowance of C/N0 value for GNSS intra- and intersystem radio frequency compatibility are proposed with theoretic rationale.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	955 - 963
Cite this article:	Zhu, L., Cui, X., Lu, M., Feng, Z., "Radio Frequency Compatibility Assessment of COMPASS New Signals," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 955-963.
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