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专著名称:
第三届中国卫星导航学术年会电子文集
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主编单位: 第三届中国卫星导航学术年会
出版时间: 2012-05-16
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编写人员: 巴晓辉
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著作性质: 电子、通信与自动控制技术
编辑出版单位: 第三届中国卫星导航学术年会
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参编内容: 基于差分相干锁频环的高灵敏度GNSS信号跟踪方法
著作简介:

Recently, weak signal tracking is a focal point of research in the field of GNSS receiver design. In this paper, a novel algorithm based on differentially coherent frequency-locked loop (DCFLL) is presented, which is not limited by the navigation bit transition. The integration time of differentially coherent FLL algorithm can be extended as long as 100ms or 200ms. Thus the increasing integration time improves the tracking sensitivity of GNSS receiver. The experimental results show that the proposed algorithm can successfully track GPS signal with received power as low as -160dBm. The selection principle of some key parameters of DCFLL is also introduced.

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