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基于短时相关和FFT的GPSL2C信号捕获算法
  • ISSN号：0258-7998
  • 期刊名称：《电子技术应用》
  • 时间：0
  • 分类：TN927[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]中国科学院微电子研究所,北京100029
  • 相关基金：国家自然科学基金资助项目（61221004）
作者： 周航[1], 巴晓辉[1], 陈杰[1], 张洪伦
关键词： GPS, L2C信号, 短时相关, FFT, 码相位比较, GPS L2C signal , short time correlation , FFT , code phase comparison
中文摘要：

设计并实现了一种基于短时相关结合F胛的GPSL2Civil（L2C）信号捕获算法。针对该算法，分析了本地码采用Return—to—ZeroCivil—Moderate（RZCM）码和NonReturn—to—ZeroCivil—Moderate（NRZCM）码时的捕获性能，并采用码相位比较策略进一步提升发现概率。仿真结果表明，在选用RZCM码并采用码相位比较策略时，该算法对载噪比为29dBHz的信号发现概率在90％以上，对载噪比为28dBHz的信号发现概率也能达到60％。

英文摘要：

An acquisition method based on the combination of short time correlation and FKF is designed and implemented for GPS L2 Civil （L2C） signal. The performance of both Return-to-Zero Civil-Moderate （RZ CM） and NonRetur-to-Zero Civil-Moderate （NRZ CM） replica code is analyzed in this paper. The strategy of code phase comparison is also used to improve detection probability. As shown in the simulation results, by using RZ CM replica code and code phase comparison strategy, the detection probability of this acquisition method is more than 90% for the signal with （Carrier to Noise Ratio）CNR at 29 dBHz, and is about 60% for the signal with CNR at 28 dBHz.

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期刊信息
  • 《电子技术应用》
  • 中国科技核心期刊
  • 主管单位:中国电子信息产业集团有限公司
  • 主办单位:华北计算机系统工程研究所
  • 主编：杨晖
  • 地址：北京市海淀区清华路25号
  • 邮编：100083
  • 邮箱：xinzw@ncse.com.cn
  • 电话：010-66608981 66608982
  • 国际标准刊号：ISSN：0258-7998
  • 国内统一刊号：ISSN：11-2305/TN
  • 邮发代号:2-889
  • 获奖情况:
  • 国家期刊奖,中文核心期刊奖,中国科技期刊奖,电子精品科技期刊
  • 国内外数据库收录:
  • 日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:20858