| 基于FFT伪码快速捕获方法及其性能分析 |
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| 引用本文： | 华涛,丁阳,石玉.基于FFT伪码快速捕获方法及其性能分析[J].现代电子技术,2007,30(23):42-44. |
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| 作者姓名： | 华涛 丁阳 石玉 |
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| 作者单位： | 电子科技大学,微电子与固体电子学院,四川,成都,610054 |
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| 摘 要： | 针对大频偏下高动态直扩接收机伪码捕获时间长的问题,提出了一种新的捕获方案,即基于FFT算法实现对多普勒频移进行一定程度的补偿,解决了高动态环境下伪码序列的快速捕获问题。实验结果表明,该方法可以很好地实现高动态扩频信号的捕获,并可以有效地节省硬件资源。
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| 关 键 词： | FFT算法 多普勒频移 匹配滤波器 扩频通信 码捕获 |
| 文章编号： | 1004-373X（2007）23-042-03 |
| 收稿时间： | 2007-06-05 |
| 修稿时间： | 2007年6月5日 |
FFT - based PN Code Fast Acquisition Method and Its Performance Analysis |
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| HUA Tao,DING Yang,SHI Yu.FFT - based PN Code Fast Acquisition Method and Its Performance Analysis[J].Modern Electronic Technique,2007,30(23):42-44. |
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| Authors: | HUA Tao DING Yang SHI Yu |
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| Affiliation: | School of Microelectronics and Solid - State Electronics, University of Electronic Science and Technology of China, Chengdu, 610054, China |
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| Abstract: | A new code acquisition method based on FFT algorithm is presented to solve the problem of long code acquisition time in high dynamic DS-SS receiver having large frequency offset.The new algorithm can compensate the frequency offset in a certain extent.Experiment results have verified its excellent performance and hardware efficiency. |
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| Keywords: | FFT algorithm frequency offset segmented matched filter spread spectrum communication code acquisition |
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