A PN-Code Optimal Design for Better Performance of Code Acquiring in MAI Environment

ZHANG Xiang-li; HU Xiu-lin; TANG Zu-ping

doi:10.3969/j.issn.0372-2112.2013.10.013

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A PN-Code Optimal Design for Better Performance of Code Acquiring in MAI Environment

更新时间：2025-07-16

- A PN-Code Optimal Design for Better Performance of Code Acquiring in MAI Environment
- Acta Electronica Sinica Vol. 41, Issue 10, Pages: 1953-1957(2013)
- 作者机构：
  
  1. 华中科技大学电信系,湖北,武汉,430074
  2. 中国地质大学(武汉)机电学院,湖北,武汉,430074
  3. 华中科技大学电信系,湖北,武汉,430074
  4. 中国地质大学(武汉)机电学院,湖北,武汉,430074
- 作者简介：
- 基金信息：
  
  Research Fund for the Doctoral Program of Higher Education of China (No.20110142120076)
- DOI：10.3969/j.issn.0372-2112.2013.10.013
  CLC： TN911.23
- Published：2013
- 稿件说明：
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ZHANG Xiang-li, HU Xiu-lin, TANG Zu-ping. A PN-Code Optimal Design for Better Performance of Code Acquiring in MAI Environment[J]. Acta Electronica Sinica, 2013, 41(10): 1953-1957.
DOI：

ZHANG Xiang-li, HU Xiu-lin, TANG Zu-ping. A PN-Code Optimal Design for Better Performance of Code Acquiring in MAI Environment[J]. Acta Electronica Sinica, 2013, 41(10): 1953-1957. DOI： 10.3969/j.issn.0372-2112.2013.10.013.

摘要

强多址干扰下的弱信号捕获是高灵敏度GNSS接收机比较常见又难以解决的问题.本文提出一种非等长的伪码设计方法

通过使各路导航信号调制伪码码长互质

从时域上降低了伪码的互相关值

从频域上降低了目标信号和干扰信号的谱分离系数.理论分析和仿真表明

基于非等长的伪码优化方法

能够改善强多址干扰环境中弱信号的捕获性能.

Abstract

A PN code optimal design based on unequal-length code modulation is proposed in this paper for better performance of code acquiring for weak signals.The principle is that by using un-equal-length code in spread-spectrum modulation the cross-correlations between different signals have been sliding

thus suppressing multiple access interference effectively.Theoretical analysis and simulation show that this design has predictive power for compressing multi access interference.

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