| 双频GPS接收机的动态辅助L2P(Y)跟踪 |
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| 引用本文： | 王先毅,孙越强,杜起飞,白伟华,吴迪,王冬伟.双频GPS接收机的动态辅助L2P(Y)跟踪[J].电子学报,2012,40(10):1938-1942. |
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| 作者姓名： | 王先毅 孙越强 杜起飞 白伟华 吴迪 王冬伟 |
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| 作者单位： | 1. 中国科学院空间科学与应用研究中心, 北京 100190;2. 中国科学院研究生院, 北京 100049 |
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| 摘 要： | 双频接收机中对L2P(Y)信号的跟踪可以使用半无码方法.但由于半无码方法本身具有平方损耗,因此实际获得的L2P(Y)信号载噪比很低,对L2P(Y)信号跟踪环路的性能提出了更高的要求.文中提出了一种利用接收机动态辅助L2P(Y)码跟踪的方法,给出了环路的设计细节,并详细地讨论了影响环路性能的各个因素.通过计算机仿真,比较了动态辅助环路和未辅助环路的性能.仿真结果表明,使用动态辅助的L2P(Y)信号跟踪环路可以在更低的载噪比下进行有效跟踪.
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| 关 键 词： | GPS 双频 半无码 Z跟踪 平方损耗 动态辅助 |
| 收稿时间： | 2011-08-29 |
Dynamic-Aided L2P(Y) Tracking in Dual-Frequency GPS Receiver |
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| WANG Xian-yi
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SUN Yue-qiang
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DU Qi-fei
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BAI Wei-hua
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WU Di
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WANG Dong-wei.Dynamic-Aided L2P(Y) Tracking in Dual-Frequency GPS Receiver[J].Acta Electronica Sinica,2012,40(10):1938-1942. |
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| Authors: | WANG Xian-yi SUN Yue-qiang DU Qi-fei BAI Wei-hua WU Di WANG Dong-wei |
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| Affiliation: | 1. Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | L2P(Y) signal tracking in dual-frequency receiver can be implemented by employing semi-codeless method.However,the actual L2P(Y) signal carrier to noise ratio is very low due to squaring-loss.As a result,higher performance requirements are needed for L2P(Y) signal tracking loop.This paper presents a way of using dynamic-aided L2P(Y) tracking.Loop design details are given,and the various factors affecting the performance of the loop are discussed in detail.The performances of the dynamic-aided loop and the none-aided loop are compared through computer simulation.Simulation results show that dynamic-aided method can track L2P(Y) signal in lower carrier to noise ratios effectively. |
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| Keywords: | GPS dual frequency semi-codeless Z-tracking squaring loss dynamic-aided |
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