| GPS快速捕获算法研究与仿真 |
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| 引用本文： | 曹单,汪澎,周建红. GPS快速捕获算法研究与仿真[J]. 火控雷达技术, 2012, 0(1): 24-27 |
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| 作者姓名： | 曹单 汪澎 周建红 |
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| 作者单位： | 电子科技大学,成都,611731 |
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| 摘 要： | 传统的GPS接收机采用时域相关的方法无论是冷启动还是信号重捕获都需要较长的时间,在高动态及弱信号的环境下应用都不理想,国外在提高捕获速度和质量都取得了一定的成果。本文介绍了一种可缩减频率搜索范围并采用平均采样相关的捕获方法,详细解释了其原理和优势,该方法在Matlab软件中得到了验证。
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| 关 键 词： | 全球卫星定位系统 软件无线电 平均采样 FFT |
Research and Simulation of GPS Signal Fast Acquisition Algorithm |
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| Cao Dan,Wang Peng,Zhou Jianhong. Research and Simulation of GPS Signal Fast Acquisition Algorithm[J]. Fire Control Radar Technology, 2012, 0(1): 24-27 |
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| Authors: | Cao Dan Wang Peng Zhou Jianhong |
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| Affiliation: | (University of Electronic Science and Technology of China,Chengdu 611731) |
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| Abstract: | The traditional GPS receiver using correlating methods in time-domain would take a long time both in cold startup and re-acquisition process;therefore its application in weak signal or high dynamic environment is not good.Foreign groups have made some achievements in improving acquisition speed and quality.An acquisition method which can narrow frequency searching scope and adopt averaging sampling correlation is introduced;its principle and advantages are explained in detail.And the method has been verified by using of software Matlab. |
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| Keywords: | GPS software defined radio averaging sampling FFT |
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