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基于块平均预处理的GNSS-R延迟映射处理方法

王峰 杨东凯 李伟强 张彦仲

王峰, 杨东凯, 李伟强, 等 . 基于块平均预处理的GNSS-R延迟映射处理方法[J]. 北京航空航天大学学报, 2015, 41(10): 1943-1949. doi: 10.13700/j.bh.1001-5965.2015.0040
引用本文: 王峰, 杨东凯, 李伟强, 等 . 基于块平均预处理的GNSS-R延迟映射处理方法[J]. 北京航空航天大学学报, 2015, 41(10): 1943-1949. doi: 10.13700/j.bh.1001-5965.2015.0040
WANG Feng, YANG Dongkai, LI Weiqiang, et al. GNSS-R delay mapping processing method based on block averaging pre-processing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1943-1949. doi: 10.13700/j.bh.1001-5965.2015.0040(in Chinese)
Citation: WANG Feng, YANG Dongkai, LI Weiqiang, et al. GNSS-R delay mapping processing method based on block averaging pre-processing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1943-1949. doi: 10.13700/j.bh.1001-5965.2015.0040(in Chinese)

基于块平均预处理的GNSS-R延迟映射处理方法

doi: 10.13700/j.bh.1001-5965.2015.0040
基金项目: 国家自然科学基金(61171070);国家"863"计划(2011AA120501,2013AA122402)
详细信息
    作者简介:

    王峰(1989-),男,甘肃兰州人,博士研究生,wangf.19@163.com

    通讯作者:

    杨东凯(1972-),男,山东莱芜人,教授,yangdongkai@sina.com,主要研究方向为GNSS应用及室内定位.

  • 中图分类号: TN965.5

GNSS-R delay mapping processing method based on block averaging pre-processing

  • 摘要: 为了提高导航卫星反射信号信噪比,提出了一种基于块平均预处理(BAP)的反射信号处理方法,该方法首先以伪码周期为块尺寸对接收信号进行分块,并对各分块进行叠加、平均,然后对平均后的信号进行相关处理.在此基础上,理论分析了块平均预处理对导航反射信号的影响,推导了镜面反射点反射信号处理增益的数学表达式,以及相关处理后得到的一维相关功率,对比分析了该方法与传统处理方法的计算复杂度,分析表明该方法对反射信号具有空域滤波效果,提高了镜面反射点反射信号的信噪比且有效降低了计算复杂度.最后,基于块平均预处理的软件接收机被开发,并对课题组实采的岸基GPS数据进行了处理,结果表明:与未块平均预处理的传统方法相比,在块平均预处理时间为2、5、10、15以及20ms时,该方法所得相关功率的峰值信噪比分别提高了约3.5、6.7、10.2、10.6和10.4dB,且在块平均预处理时间为10ms时,处理等长数据的时间缩短了近2.2倍.

     

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出版历程
  • 收稿日期:  2015-01-22
  • 修回日期:  2015-04-17
  • 网络出版日期:  2015-10-20

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