High Precision Direct Position Determination Method for Satellite Navigation Spoofing

LIU Qing; XIE Jian; WANG Ling; WANG Qiu-hong; ZHANG Zhao-lin

doi:10.12263/DZXB.20210527

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High Precision Direct Position Determination Method for Satellite Navigation Spoofing

PAPERS | 更新时间：2025-12-08

- High Precision Direct Position Determination Method for Satellite Navigation Spoofing
- ACTA ELECTRONICA SINICA Vol. 50, Issue 5, Pages: 1117-1122(2022)
- 作者机构：
  
  1.西北工业大学电子信息学院, 陕西西安 710072
  2.中国空间技术研究院卫星应用总体部, 北京 100094
- 作者简介：
- 基金信息：
- DOI：10.12263/DZXB.20210527
  CLC： TN971.5
- Received：23 April 2021，
  
  Revised：2021-08-03，
  
  Published：25 May 2022
- 稿件说明：
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刘清,谢坚,王伶等.卫星导航欺骗式干扰源高精度直接定位方法[J].电子学报,2022,50(05):1117-1122.

LIU Qing,XIE Jian,WANG Ling,et al.High Precision Direct Position Determination Method for Satellite Navigation Spoofing[J].ACTA ELECTRONICA SINICA,2022,50(05):1117-1122.
刘清,谢坚,王伶等.卫星导航欺骗式干扰源高精度直接定位方法[J].电子学报,2022,50(05):1117-1122. DOI： 10.12263/DZXB.20210527.

LIU Qing,XIE Jian,WANG Ling,et al.High Precision Direct Position Determination Method for Satellite Navigation Spoofing[J].ACTA ELECTRONICA SINICA,2022,50(05):1117-1122. DOI： 10.12263/DZXB.20210527.

摘要

针对目前欺骗式干扰源定位场景中定位精度低、信息利用率不足等问题，本文提出了一种基于导航信号特征的直接定位方法（DeSpreading Direct Position Determination

DS-DPD）.通过建立融合传输时延、多普勒频移、扩频序列的接收信号模型，利用最大似然准则构建直接定位的目标函数，并通过求解目标函数得到待定位欺骗式干扰源的位置信息.仿真结果表明，DS-DPD能够有效提升对欺骗式干扰源的定位精度.尤其在低干噪比环境下，与传统的基于时延和多普勒信息的直接定位方法相比，所提方法的定位精度可提高10倍以上.

Abstract

A direct position determination method called DS-DPD(DeSpreading Direct Position Determination) which is based on satellite navigation signal characteristics is proposed to improve the positioning accuracy of satellite navigation spoofing. The received signal model is first established

which takes the transmission delay

Doppler frequency shift and satellite code signal into account. The maximum likelihood(ML) criterion is then utilized to construct the objective function of DS-DPD

and the location parameters can be obtained through a two-dimensional spectral search of the objective function. The proposed method utilizes partial knowledge of the satellites’ code sequences

which in turn provides significant gains in positioning accuracy. Numerical simulations verify the positioning performance improvement of the proposed DS-DPD algorithm. Especially

when the interference to noise ratio(INR) is -30dB

the positioning accuracy could be improved by more than 10 times due to its full utilization of the delay

Doppler frequency shift and code sequences information.

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references

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