[1]宋新刚 雷珺琳 路卫军.一种C／A码互相关干扰消除算法[J].计算机技术与发展,2011,(01):1-4.
　SONG Xin-gang,LEI Jun-lin,LU Wei-jun.A C/A Code Cross-Correlation Interference Cancellation Algorithm[J].,2011,(01):1-4.
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一种C／A码互相关干扰消除算法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2011年01期
页码:
1-4
栏目:
智能、算法、系统工程
出版日期:
1900-01-01

文章信息/Info

Title:
A C/A Code Cross-Correlation Interference Cancellation Algorithm
文章编号:
1673-629X（2011）01-0001-04
作者:
宋新刚1 雷珺琳1 路卫军2
[1]中国空间技术研究院[2]北京大学微电子学系
Author(s):
SONG Xin-gang ; LEI Jun-lin;  LU Wei-jun
[1]China Academy of Space Technology[2]Department of Microelectronics, Peking University
关键词:
互相关干扰; 全球定位系统; C／A码
Keywords:
cross correlation;  global positioning system ;  C/A code
分类号:
TP301.6
文献标志码:
A
摘要:
C／A码互相关于扰是影响接收机灵敏度提高的关键因素之一，历史文献中提出的互相关干扰消除算法大多不能采用硬件实现，提出了一种用于GPS接收机的互相关干扰消除算法EDPIC法。本算法首先对所有强信号进行搜索，估计所有可见强信号的参数，根据这些参数采用一个通道重建所有的强信号并估计强信号和弱信号对应码间的互相关，并从弱信号自相关结果中去除强信号的互相关干扰，从而达到消除互相关干扰的目的。仿真结果表明在弱信号比强信号弱30dB的情况下，能有效消除强信号对弱信号的互相关干扰
Abstract:
Cross-correlation of C/A code is one of the key problems which affect improving the sensitivity of the high sensitivity GPS re- ceiver. Most algorithms proposed in the literature publications are too complex to be implemented by hardware. A cross-correlation mitigation algorithm for the global positioning system called extended delayed parallel interference cancellation （EDPIC） is proposed. First strong signals are searched, then the strong signals are reconstructed by a single channel. The cross correlation value between reconstructed strong signals and the local carrier and C/A code of the weak signal is estimated and subtracted from weak signal auto-correlation results. Simulation results shown that the proposed algorithm can mitigate cross correlation well even weak satellite signals are attenuated by 30dB comparing with the strong ones

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备注/Memo

备注/Memo:
北京市科委SOC重大专项（D0306008040211）宋新刚（1977－），男，从事卫星导航算法设计及实现技术研究；雷珺琳，硕士，从事小波变换和图像编码处理技术研究；路卫军，博士，研究方向为大规模数字集成电路、CNSS系统基带信号处理、精密定位、多系统组合导航等
更新日期/Last Update: 1900-01-01