| GPS接收机中的码分多址信号处理研究 |
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| 引用本文： | 曹建林,谢长生.GPS接收机中的码分多址信号处理研究[J].电子工程师,2006,32(12):5-8. |
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| 作者姓名： | 曹建林 谢长生 |
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| 作者单位： | 1. 江苏信息职业技术学院,江苏省,无锡市,214061
2. 中国电子科技集团公司第五十八研究所,江苏省,无锡市,214000 |
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| 摘 要： | 介绍了基于码分多址信号处理的GPS(全球定位系统)接收机的算法和电路设计。GPS接收机电路的信号处理任务主要是对数字化后的基带扩频信号进行载波跟踪、解调、解扩、码跟踪,从而得到符号数据。着重讨论了GPS接收机中信号处理部分的COSTAS、码跟踪、帧同步生成电路三大模块的功能任务、原理、算法及其相应的电路设计。通过这些研究工作,可以进一步设计出当前应用日益普遍的GPS接收机电路,该电路具有功能全面、通用性好、可靠性高等特点。
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| 关 键 词： | GPS 接收机 码分多址 信号处理 COSTAS 码跟踪 帧同步 |
| 收稿时间： | 2005-08-01 |
| 修稿时间： | 2006-11-06 |
CDMA Signal Processing in GPS Receiver |
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| CAO Jianlin,XIE Changsheng.CDMA Signal Processing in GPS Receiver[J].Electronic Engineer,2006,32(12):5-8. |
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| Authors: | CAO Jianlin XIE Changsheng |
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| Affiliation: | 1. Jiangsu College of Information Technology, Wuxi 214061, China; China Electronics Technology Group No. 58 Research Institute, Wuxi 214000, China |
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| Abstract: | A study of CDMA signal processing and its circuit design in GPS receiver are introduced in this paper.The main task of signal processing of GPS receiver circuit is to get symbolic data through the carrier tracking,demodulation,despreading and code tracking of digitalised baseband spread spectrum signal.Emphasis is laid on the functions,theories,algorithms and corresponding circuit designs of the three modules of COSTAS module,code tracking module and frame synchronization related to signal processing in GPS receiver.Through the study,the circuit of GPS receiver being used more and more commonly today can be designed,which has the characteristics of complete functions,universality and high reliability. |
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| Keywords: | GPS receiver CDMA signal processing COSTAS code tracking frame synchronization |
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