| GPS中新的长码直捕算法的提出与分析 |
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| 引用本文： | 刘芳,冯永新,潘成胜.GPS中新的长码直捕算法的提出与分析[J].火力与指挥控制,2009,34(6). |
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| 作者姓名： | 刘芳 冯永新 潘成胜 |
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| 作者单位： | 1. 南京理工大学,江苏,南京,210094;沈阳理工大学通信与网络工程中心,辽宁,沈阳,110168
2. 沈阳理工大学通信与网络工程中心,辽宁,沈阳,110168 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 目前GPS中长码的捕获通常是利用短码来完成.但是,为保证扩频信号具有更高的扩频增益、更强的抗模仿和抗欺骗能力,必须实现长码的直接捕获.在研究以P码信号为例的结构及特性的基础上,分析现今较有效的捕获算法,并提出了一种新的时频域相结合的算法,同时在仿真环境下加以实现,通过实验验证:新的算法能够达到有效的长码捕获,为进一步的工程化实施奠定了基础.
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| 关 键 词： | 直接捕获 循环相关 P码 |
The Propose and Analyze of the New Direct Acquisition Methods based on Long Code in GPS |
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| LIU Fang,FENG Yong-xin,PAN Cheng-sheng.The Propose and Analyze of the New Direct Acquisition Methods based on Long Code in GPS[J].Fire Control & Command Control,2009,34(6). |
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| Authors: | LIU Fang FENG Yong-xin PAN Cheng-sheng |
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| Institution: | 1.Nanjing University of Science and Technology;Nanjing 210094;China;2.Communication and Network Institute of Shen Yang Li Gong University;Shenyang 110168;China |
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| Abstract: | Long code is usually acquired depending on short code.But,direct P code acquisition should be implemented in GPS in order to achieve the higher spread spectrum gain,the better anti-deception and anti-spoofing.Basing on researching the structure and the characteristics of P code,the more effective acquisition algorithms were analysed,and a new fast direct acquisition algorithm has been proposed.The new algorithm was designed in simulative environment,which proved such new algorithm is effective algorithm.In ... |
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| Keywords: | GPS |
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