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[ "辛富国,男,陕西邮电职业技术学院讲师、教务处副处长,主要研究方向为GNSS(全球卫星导航系统)、网络抗干扰、光通信技术。" ]
[ "李荣芳,女,陕西邮电职业技术学院讲师,主要研究方向为数据挖掘、算法与数据结构、多媒体技术。" ]
网络出版日期:2014-03,
纸质出版日期:2014-03-20
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辛富国, 李荣芳. GNSS信号捕获与跟踪算法的改进与实现[J]. 电信科学, 2014,30(3):105-108.
Fuguo Xin, Rongfang Li. Implementation and Realization of GNSS Signals Acquisition and Tracking Algorithm[J]. Telecommunications science, 2014, 30(3): 105-108.
辛富国, 李荣芳. GNSS信号捕获与跟踪算法的改进与实现[J]. 电信科学, 2014,30(3):105-108. DOI: 10.3969/j.issn.1000-0801.2014.03.019.
Fuguo Xin, Rongfang Li. Implementation and Realization of GNSS Signals Acquisition and Tracking Algorithm[J]. Telecommunications science, 2014, 30(3): 105-108. DOI: 10.3969/j.issn.1000-0801.2014.03.019.
为了缩短GNSS接收机捕获信号所用的时间,在对导航信号进行频谱观察的基础上,改进了基于FFT的捕获算法和阈值的设定,并对改进后的算法进行了仿真验证,结果表明该算法具有可行性,并可以缩短捕获时间。设计了GNSS接收机的完整跟踪通道,利用MATLAB软件对该跟踪通道进行仿真,仿真结果验证了该跟踪通道的正确性。
Based on the observation of frequency spectrum of navigation signal
an improved FFT acquisition algorithm was proposed which could reduce the capturing time of GNSS receiver
the threshold of the algorithm was also modified. Simulation results show that the new algorithm can shorter capturing time. The complete tracking channel of the GNSS receiver was also designed
and the MATLAB simulation results verify the correctness of the proposed tracking channel.
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