| 一种基于FQFD/FLL/PLL的混合载波跟踪算法 |
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| 引用本文： | 罗大成,王仕成,刘志国,张金生,王凯.一种基于FQFD/FLL/PLL的混合载波跟踪算法[J].航天控制,2009,27(1). |
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| 作者姓名： | 罗大成 王仕成 刘志国 张金生 王凯 |
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| 作者单位： | 1. 第二炮兵工程学院,西安,710025
2. 第二炮兵驻孝感地区军事代表室,湖北孝感,432100 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 载波跟踪技术是GPS软件接收机的关键技术之一,载波跟踪算法在很大程度上决定了GPS软件接收机的性能.基于一种典型载波跟踪环的结构,分析了当前载波跟踪环常用的四相鉴频器、锁频环、锁相环的工作原理及其性能,设计了一种基于三者的混合载波跟踪算法.仿真结果表明,所设计的载波跟踪算法在多普勒频率为一固定值、阶跃函数、斜坡函数和加速度函数时都能准确跟踪载波,证明所设计的载波跟踪算法行之有效.
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| 关 键 词： | 四相鉴频器 锁频环 锁相环 载波跟踪 |
A Hybrid Carrier Tracking Algorithm Based on FQFD,FLL and PLL |
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| LUO Dacheng,WANG Shicheng,LIU Zhiguo,ZHANG Jinsheng,WANG Kai.A Hybrid Carrier Tracking Algorithm Based on FQFD,FLL and PLL[J].Aerospace Control,2009,27(1). |
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| Authors: | LUO Dacheng WANG Shicheng LIU Zhiguo ZHANG Jinsheng WANG Kai |
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| Institution: | LUO Dacheng1 WANG Shicheng1 LIU Zhiguo1 ZHANG Jinsheng1 WANG Kai21.The Second Artillery Engineering College,Xi'an 710025,China2.The Military Deputy Office of the Second Artillery in Xiaogan City,Xiaogan 432100,China |
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| Abstract: | Carrier tracking is one of the key technologies of software GPS receiver.The capability of software GPS receiver is almost depended on it.According to a common structure of carrier tracking,the frequently used devices of carrier tracking such as four quadrant frequency discriminator(FQFD),frequency lock loop(FLL) and phase lock loop(PLL) are analyzed.The work principles and performance of them are validated by simulation.Based on these three devices,a new mixed carrier tracking loop is designed.The capabili... |
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| Keywords: | Four-quadrant frequency discriminator Frequency lock loop Phase lock loop Carrier tracking |
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