Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (3): 938-950.doi: 10.12305/j.issn.1001-506X.2025.03.26

• Guidance, Navigation and Control • Previous Articles    

Review of nonlinear distortion modeling in RF front end of satellite navigation receivers

Jiajun LIU, Zukun LU, Wei XIAO, Zongnan LI, Zhe LIU   

  1. College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • Received:2024-04-17 Online:2025-03-28 Published:2025-04-18
  • Contact: Zukun LU

Abstract:

The nonlinear effect of radio frequency (RF) front end of satellite navigation receiver threatens the normal operation of navigation equipment, which is the bottleneck to further improve the anti-interference performance of satellite navigation receiver. It is an important method to establish the behavior model of nonlinear effect of equipment. With the variety of satellite navigation receivers and the complexity of interference environment, the existing nonlinear models are shown the problems of insufficient targeted research on satellite navigation receivers, insufficient reliability under interference environment, and unsuitable modeling methods. Therefore, this paper summarizes the mainstream modeling methods of nonlinear effect behavior level, reviews the advantages and disadvantages of each modeling method, and introduces the application of machine learning technology in nonlinear behavior level modeling. Finally, based on the summary of the characteristics of existing modeling technologies and the problems faced, the future development of nonlinear behavior modeling technology of satellite navigation receiver is prospected.

Key words: satellite navigation receiver, nonlinear distortion, behavior model, machine learning

CLC Number: 

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