| 基于FFT的P码捕获技术及FPGA实现 |
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| 引用本文： | 何 琪,郑建生,陈鲤文.基于FFT的P码捕获技术及FPGA实现[J].科学技术与工程,2015,15(5):120-124,136. |
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| 作者姓名： | 何 琪 郑建生 陈鲤文 |
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| 作者单位： | 武汉大学电子信息学院,武汉,430072 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 根据GPS P码的特性,提出了基于FFT的P码快速捕获方法。基于FPGA技术,介绍了P码快速捕获算法的硬件实现。根据算法原理以及系统特性,分析了捕获时间。测试结果表明,此系统能正确捕获GPS P码,且耗时较短,具有较好的灵活性和可扩展性。
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| 关 键 词： | GPS P码 快速捕获 FPGA |
| 收稿时间： | 2014/9/30 0:00:00 |
| 修稿时间： | 2014/9/30 0:00:00 |
FFT-based fast acquisition method of GPS P code and implementation based on FPGA |
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| HE Qi
,
ZHENG Jian-sheng
,
CHEN Li-wen.FFT-based fast acquisition method of GPS P code and implementation based on FPGA[J].Science Technology and Engineering,2015,15(5):120-124,136. |
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| Authors: | HE Qi ZHENG Jian-sheng CHEN Li-wen |
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| Institution: | School of Electronic Information,Wuhan University |
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| Abstract: | FFT-based fast acquisition method of GPS P code (precise code) was proposed according to its characteristics. This paper also introduced the hardware implementation of this algorithm based on FPGA technology. The acquisition time was analyzed according to the algorithm principle and the characteristics of system. Test results show that this system can capture GPS P code correctly using less time and it has the advantage of flexibility and scalability. |
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| Keywords: | GPS P code fast acquisition FPGA |
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