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弹箭与制导学报 >

2014 , Vol. 34 >Issue 3: 209 - 212

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2014.03.004

相关技术

压制式干扰环境中GPS信号的载噪比估计算法

  • 朱海 ,
  • 史文森 ,
  • 蔡鹏 ,
  • 李广博
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  • 海军潜艇学院,山东青岛 266042

朱海(1965-),男,山东青岛人,教授,博士生导师,研究方向:导航制导与控制。

收稿日期: 2012-06-01

  网络出版日期: 2025-05-30

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The Estimation Method for GPS C/N0 Under Oppressive Jamming

  • ZHU Hai ,
  • SHI Wensen ,
  • CAI Peng ,
  • LI Guangbo
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  • Navy Submarine Academy, Shandong Qingdao 266042, China

Received date: 2012-06-01

  Online published: 2025-05-30

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摘要

针对GPS信号在压制式干扰的环境中载噪比难以测得的问题,分析了在压制式干扰情况下GPS信号的载噪比特性以及压制式干扰信号在GPS接收机I支路和Q支路中的形式,提出了一种适用于压制式干扰情况下的单通道测定信号载噪比的方法,减小了载噪比的计算误差。接收机利用该方法可以在信号捕获过程中完成载噪比的测量,无需对硬件扩展,实现过程简单、有效,几乎没有增加信号处理的运算量。

关键词： GPS信号; 压制式干扰; 载噪比; I支路; Q支路

本文引用格式

朱海 , 史文森 , 蔡鹏 , 李广博 . 压制式干扰环境中GPS信号的载噪比估计算法[J]. 弹箭与制导学报, 2014 , 34(3) : 209 -212 . DOI: 10.15892/j.cnki.djzdxb.2014.03.004

Abstract

In view of difficult C/N0 measurement of GPS signal under oppressive jamming, C/N0 characteristic of GPS signal under oppressive jamming and form of oppressive jamming signal in I channel and Q channel of GPS receiver were analyzed, the method for measuring C/N0 in signal channel under oppressive jamming was put forward, as a result, the error of C/N0 calculation was reduced. With this method, GPS receiver could carry out C/N0 measurement during signal capture without hardware expansion; furthermore, the measuring process is simple, effective and no increment in calculation of signal processing.

Key words： GPS signal; oppressive jamming; C/N0; I channel; Q channel

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参考文献

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