通信与信息技术Issue(4)：105-109,5.
高动态卫星导航信号多普勒频率模拟方法
Doppler simulation method for high dynamic satellite navigation signal
摘要
Abstract
A third-order DDS navigation signal simulation algorithm based on phase reset is proposed to address the difficulty of simulating Doppler frequency in high dynamic scenarios for satellite navigation signal simulation sources.This method starts with the physical model of relative motion between satellites and receivers,and establishes a third-order DDS model based on digital circuits,which can effectively simulate the Doppler frequency of navigation signals containing high-order terms in high dynamic scenarios.In addition,phase reset is performed on key parameters in the third-order DDS model to avoid cumulative errors.Simulation was conduct-ed in a computer,and the results showed that in a high dynamic scenario with a speed of 10000 m/s,an acceleration of 1000 m/s2,and a jerk of 1000 m/s3,the algorithm improved the Doppler frequency simulation accuracy by 31 dB compared to traditional algorithms,and did not deteriorate accuracy due to increased jerk.The Doppler frequency simulation accuracy can reach-36 dB or higher.This method can accurately simulate the Doppler frequency of navigation signals in high dynamic scenarios and has a certain degree of robustness.关键词
多普勒频率/高动态/三阶DDS/模拟精度Key words
Doppler frequency/High dynamic/Third order DDS/Simulation accuracy分类
信息技术与安全科学引用本文复制引用
王彦朋,苏嘉松,王晓君,姚远..高动态卫星导航信号多普勒频率模拟方法[J].通信与信息技术,2024,(4):105-109,5.基金项目
河北省省级科技计划项目——新一代电子信息技术创新专项(项目编号:21310402D) （项目编号:21310402D）
