Double Block Zero Padding-Based Fast-Acquisition of Weak GPS Signal

JIAO Rui-xiang; MAO Xu-chu

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Double Block Zero Padding-Based Fast-Acquisition of Weak GPS Signal

更新时间：2025-07-16

- Double Block Zero Padding-Based Fast-Acquisition of Weak GPS Signal
- Acta Electronica Sinica Vol. 36, Issue 12, Pages: 2285-2289(2008)
- 作者机构：
  
  上海交通大学仪器科学与工程系,上海,200240
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN967.1
- Published Online：25 December 2008，
  
  Published：2008
- 稿件说明：
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JIAO Rui-xiang, MAO Xu-chu. Double Block Zero Padding-Based Fast-Acquisition of Weak GPS Signal[J]. Acta Electronica Sinica, 2008, 36(12): 2285-2289.
DOI：

JIAO Rui-xiang, MAO Xu-chu. Double Block Zero Padding-Based Fast-Acquisition of Weak GPS Signal[J]. Acta Electronica Sinica, 2008, 36(12): 2285-2289. DOI：

摘要

卫星信号的捕获是GPS(Global Positioning System)接收机信号处理的首要任务.在微弱信号环境下

传统的方法难以实现信号捕获的准确性和快速性.本文的新方法将P(Y)码捕获技术应用于微弱GPS信号的C/A码捕获

并针对连续积分数据跨越多个导航电文数据位的情况给出解决方案.仿真结果表明

此方法能够较好地捕获到信噪比低至15dB-Hz的信号

同时确保较少的运算量和较高的灵敏度.

Abstract

Signal acquisition is the first work of signal processing in Global Positioning System receiver.However

it is difficult to get the accuracy and fast acquisition of the GPS signal by traditional methods when the signal is very weak.The paper presented a new method which applies the technology of acquisition of P(Y) code in the acquisition of C/A code

and gives resolutions account for the problems brought from the data spanning multiple data bits.The simulation results show that

signal which carrier noise ratio is low to 15dB-Hz could be well acquired by the new method

with fast acquisition speed and high sensitivity.

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Related Institution

中国人民解放军战略支援部队信息工程大学

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