天地一体化信息网络2024，Vol.5Issue(4)：95-105,11.DOI:10.11959/j.issn.2096-8930.2024042
高速飞行器相对低轨卫星的多普勒频移预测捕获方法
Doppler Frequency Shift Prediction and Acquisition Method for High-Speed Aircraft Relative to Low Orbit Satellites
李毅 1周康燕2
作者信息
- 1. 中国星网网络应用研究院有限公司,北京 100001
- 2. 中国星网网络系统研究院有限公司,北京 100001
- 折叠
摘要
Abstract
The rapid relative displacement between high-speed aircraft and low-Earth orbit(LEO)satellites causes Doppler frequency shifts,affecting signal synchronization,acquisition,and demodulation performance.To address this issue,a Doppler shift prediction ac-quisition method combining aircraft PVT(Position,Velocity,Time)information and LEO satellite ephemeris data was proposed.The relative velocity was calculated using an analytical approach to predict the Doppler shift range.Within the preset interval,fractional Doppler estimation and compensation were applied,solved the problems of high resource consumption and insufficient accuracy in tra-ditional methods.Simulations showed that the maximum residual frequency offset after compensation is significantly lower than the er-ror range of traditional methods.关键词
多普勒频移/高速飞行器/低轨卫星/信号解调Key words
Doppler frequency shift/high-speed aircraft/low orbit satellites/signal demodulation分类
信息技术与安全科学引用本文复制引用
李毅,周康燕..高速飞行器相对低轨卫星的多普勒频移预测捕获方法[J].天地一体化信息网络,2024,5(4):95-105,11.
