A GPS Signal Acquisition Scheme Based on Interpolated Local Code

PAN Bang-gan; MAO Zhi-gang; XIE Jing

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A GPS Signal Acquisition Scheme Based on Interpolated Local Code

更新时间：2026-09-04

- A GPS Signal Acquisition Scheme Based on Interpolated Local Code
- Vol. 27, Issue 11, Pages: 94-98(2010)
- 作者机构：
  
  上海交通大学微电子学院,上海,200240
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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潘邦淦, 毛志刚, 谢憬. 基于本地码插值修正的GPS信号捕获方法[J]. 微电子学与计算机, 2010, 27(11): 94-98.

PAN Bang-gan, MAO Zhi-gang, XIE Jing. A GPS Signal Acquisition Scheme Based on Interpolated Local Code[J]. 2010, 27(11): 94-98.
潘邦淦, 毛志刚, 谢憬. 基于本地码插值修正的GPS信号捕获方法[J]. 微电子学与计算机, 2010, 27(11): 94-98. DOI：

PAN Bang-gan, MAO Zhi-gang, XIE Jing. A GPS Signal Acquisition Scheme Based on Interpolated Local Code[J]. 2010, 27(11): 94-98. DOI：

摘要

提出了对GPS信号平均下采样捕获方法的改进.首先描述了平均下采样方法中峰值幅度受CA码起始位置的影响

从而会造成大量的运算时间.由此角度出发

通过FFT变换基插值的方法修改本地码

不仅避免了峰值衰减

而且在无需大量增加硬件资源的情况下

把捕获的时间缩短为原来的1/3.

Abstract

In this paper

an improved version of Modified-Code Averaging Correlation Method for GPS signal acquisition is presented. Firstly

effect of CA starting point location on magnitude of correlation peak of that method

which leads to a large amount of computation time

is described. Then

a remedy scheme using FFT basic to interpolate local code to prevent attenuation is introduced. With this improved version

performance enhancement can be achieved in terms of execution time reduced to about 1/3 of the original one without great overhead in hardware.

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Related Institution

Research Institute Electronic Science and Technology, University of Electronic Science Technology of China

School of Electric and Communication Engineering, Shaanxi University of Science and Technology, Xi′an

1 Institute of Microelectronics, the Chinese Academy of Sciences

2 Hangzhou Zhongke Microelectronics Co, Ltd

1 Institute of Microelectronics, Chinese Academy of Sciences

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