Nonlinear and Compatibility Analysis on Satellite Navigation Modulation

Abstract

Abstract: The nonlinear characteristics and compatibility of minimum shift keying (MSK) and quadrature phase shift keying (QPSK) modulated signals were analyzed. Firstly, the timedomain and frequencydomain models of MSK modulated navigation signal were established and its impact on code pulse shape was discussed. It was suggested that MSK can be a candidate modulation for navigation signal. Secondly, nonlinear channel model was established, and the power loss, correlation loss, code tracking and spectrum separation coefficients of MSK and QPSK modulated navigation signals were simulated. Finally the simulation results show that the nonlinear performance and compatibility of MSK modulated navigation signals are better than QPSK modulated signals, ensuring the code tracking performance.

Key words: Global positioning system, Quadrature phase shift keying, Minimum shift keying, Nonlinear, Compatibility

RAN Yi-Hang, HU Xiu-Lin, KE Ting, LIU Yu-Qi. Nonlinear and Compatibility Analysis on Satellite Navigation Modulation[J]. , 2010, 30(5): 39-47.

References

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