高速飞行器相对低轨卫星的多普勒频移预测捕获方法

李毅; 周康燕

doi:10.11959/j.issn.2096-8930.2024042

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高速飞行器相对低轨卫星的多普勒频移预测捕获方法

研究 | 更新时间：2025-01-02

- 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
- 天地一体化信息网络 2024年5卷第4期页码：95-105
- 作者机构：
  
  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
- 作者简介：
  
  [ "李毅（1984- ），男，硕士，中国星网网络应用研究院有限公司高级工程师，主要研究方向卫星通信、飞行器总体设计。" ]
- 基金信息：
- DOI：10.11959/j.issn.2096-8930.2024042
  中图分类号： TN927
- 收稿日期：2024-07-18，
  
  修回日期：2024-10-30，
  
  纸质出版日期：2024-12-20
- 稿件说明：
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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,2024,05(04):95-105.

LI Yi,ZHOU Kangyan.Doppler Frequency Shift Prediction and Acquisition Method for High-Speed Aircraft Relative to Low Orbit Satellites[J].Space-Integrated-Ground Information Networks,2024,05(04):95-105.
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,2024,05(04):95-105. DOI： 10.11959/j.issn.2096-8930.2024042.

LI Yi,ZHOU Kangyan.Doppler Frequency Shift Prediction and Acquisition Method for High-Speed Aircraft Relative to Low Orbit Satellites[J].Space-Integrated-Ground Information Networks,2024,05(04):95-105. DOI： 10.11959/j.issn.2096-8930.2024042.

摘要

高速飞行器与低轨卫星的快速相对位移会导致多普勒频移，影响信号的同步捕获与解调性能。针对这一问题，提出一种结合飞行器PVT信息和低轨卫星星历信息的多普勒频移预测捕获方法。通过解析方法计算相对速度，预测多普勒频移范围，并在预设区间内采用小数多普勒估计与补偿，解决了传统方法中资源消耗高、精度不够的问题。仿真表明，补偿后的最大频移残差显著低于传统方法的误差范围。

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 acquisition 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 traditional methods. Simulations showed that the maximum residual frequency offset after compensation is significantly lower than the error range of traditional methods.

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Keywords

references

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