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2011, 10, v.41;No.269 17-20
低轨卫星自跟踪技术分析
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摘要:

针对低轨(LEO)卫星无信标信号时,传统自跟踪方式无法对其进行有效跟踪的问题,提出了全数字跟踪体制。对采用频分时分复合多址(FDMA/TDMA)体制的低轨卫星,采用宽带检测结合窄带跟踪的方法,快速准确地提取方位俯仰误差,实现了对目标卫星的高精度跟踪。对采用码分多址(CDMA)体制的低轨卫星,采用频域跟踪的方法,实现了低信噪比条件下对目标卫星的高精度跟踪。

Abstract:

The traditional autotracking method can't implement effective tracking for LEO satellite without beacon signal.To solve this problem,an all-digit tracking method is proposed in this paper.For the LEO satellite operating in FDMA/TDMA mode,this method combining narrowband tracking with wideband detection can quickly and accurately extract the errors of azimuth and elevation and fulfills the tracking with high precision.For the LEO satellite operating in CDMA mode,this algorithm extracting tracking error in frequency domain can precisely track the LEO satellite with low SNR signal of LEO.

参考文献

[1]高延生.比相单脉冲自跟踪系统设计与仿真.无线电工程,2009,39(1):36-38.

[2]赵业福,李进华.无线电跟踪测量系统[M].北京:国防工业出版社,2001:89-98.

[3]杨可忠,杨智勇.现代面天线新技术[M].北京:人民邮电出版社,1993:53-55.

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中图分类号:V556

引用信息:

[1]姚勇.低轨卫星自跟踪技术分析[J].无线电工程,2011,41(10):17-20.

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