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时频域并行捕获算法

占巍 张晓林 李娟

占巍, 张晓林, 李娟等 . 时频域并行捕获算法[J]. 北京航空航天大学学报, 2013, 39(5): 706-710.
引用本文: 占巍, 张晓林, 李娟等 . 时频域并行捕获算法[J]. 北京航空航天大学学报, 2013, 39(5): 706-710.
Zhan Wei, Zhang Xiaolin, Li Juanet al. Parallel acquisition algorithm in time-frequency domain[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(5): 706-710. (in Chinese)
Citation: Zhan Wei, Zhang Xiaolin, Li Juanet al. Parallel acquisition algorithm in time-frequency domain[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(5): 706-710. (in Chinese)

时频域并行捕获算法

详细信息
  • 中图分类号: TN927

Parallel acquisition algorithm in time-frequency domain

  • 摘要: 针对DS/FH(Direct Sequence/Frequency Hopping)混合扩频测控信号的快速捕获,经典的时域并行方法或频域并行方法已不能满足需求.为了进一步提高载波捕获精度,在PMF-FFT(Partial Match Filter-Fast Fourier Transform)算法基础上,提出了一种反馈式结构的时频域并行捕获算法,通过PMF-FFT算法粗估载波频偏,利用一种Quinn频率插值算法提高频偏估计精度,并使用估计结果调整本地载波,再次进行捕获.理论分析和仿真结果表明,该算法与PMF-FFT算法相比,提高了载波捕获精度,在大频偏低信噪比条件下增加了频率分析带宽、减少了平均捕获时间.

     

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  • 被引次数: 0
出版历程
  • 收稿日期:  2012-12-18
  • 修回日期:  2013-03-05
  • 网络出版日期:  2013-05-31

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