| GPS信号捕获跟踪环路的研究及实现 |
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| 引用本文： | 廖晰,张晓林,王宇恒. GPS信号捕获跟踪环路的研究及实现[J]. 电子测量技术, 2009, 32(2): 36-39 |
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| 作者姓名： | 廖晰 张晓林 王宇恒 |
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| 作者单位： | 北京航空航天大学,北京,100191;北京航空航天大学,北京,100191;北京航空航天大学,北京,100191 |
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| 摘 要： | 捕获跟踪环路的设计是GPS接收机设计中的关键技术之一。本文首先阐述了扩频通信系统中捕获与跟踪的基本原理;重点阐述了GPS信号捕获跟踪通路的整体设计方案,详细论述了捕获跟踪模块中初始态、捕获态、同步态及保护态的设计及实现;最后给出了仿真结果和基于FPGA验证的测试数据。运行结果表明设计的捕获跟踪环路功能正常,性能可靠,可完成GPS信号的捕获和跟踪。
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| 关 键 词： | GPS 扩频 捕获跟踪 FPGA |
Research and implementation in signal acquisition and tracking loops of GPS |
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| Liao Xi,Zhang Xiaolin,Wang Yuheng. Research and implementation in signal acquisition and tracking loops of GPS[J]. Electronic Measurement Technology, 2009, 32(2): 36-39 |
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| Authors: | Liao Xi Zhang Xiaolin Wang Yuheng |
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| Affiliation: | Beijing University of Aeronautics and Astronautics;Beijing 100191 |
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| Abstract: | The design of signal acquisition and tracking loops is the key technique in designing the GPS receiver.This paper firstly presents fundamental principle of signal acquisition and tracking in the spread spectrum system.Then it presents with the emphasis on overall design of signal acquisition and tracking loops of GPS,and with details at the module design and implementation of state machine,including initial state,acquiring state,synchronizing state and protecting state.In the end,it gives the simulation res... |
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| Keywords: | GPS FPGA |
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