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基于時間-調頻斜率分布的多普勒調頻率估計

汪金真 宿紹瑩 陳曾平

汪金真, 宿紹瑩, 陳曾平. 基于時間-調頻斜率分布的多普勒調頻率估計[J]. 電子與信息學報, 2015, 37(9): 2138-2143. doi: 10.11999/JEIT150116
引用本文: 汪金真, 宿紹瑩, 陳曾平. 基于時間-調頻斜率分布的多普勒調頻率估計[J]. 電子與信息學報, 2015, 37(9): 2138-2143. doi: 10.11999/JEIT150116
Wang Jin-zhen, Su Shao-ying, Chen Zeng-ping. Estimation of Doppler Rate Based on Time-chirp Distribution[J]. Journal of Electronics & Information Technology, 2015, 37(9): 2138-2143. doi: 10.11999/JEIT150116
Citation: Wang Jin-zhen, Su Shao-ying, Chen Zeng-ping. Estimation of Doppler Rate Based on Time-chirp Distribution[J]. Journal of Electronics & Information Technology, 2015, 37(9): 2138-2143. doi: 10.11999/JEIT150116

基于時間-調頻斜率分布的多普勒調頻率估計

doi: 10.11999/JEIT150116

Estimation of Doppler Rate Based on Time-chirp Distribution

  • 摘要: 該文提出基于時間-調頻斜率分布(TCD)的目標回波線性調頻(LFM)信號的多普勒調頻斜率估計算法。分析目標回波LFM信號的TCD表明自項和交叉項均在多普勒調頻斜率處取得極大值,采用垂直調頻斜率軸投影積分可以有效抑制TCD的非多普勒調頻斜率交叉項及噪聲,增強多普勒調頻斜率項。同時,采用二次搜索方法搜索TCD投影積分量最大值保證多普勒調頻斜率估計精度,有效減少運算量;理論分析表明,通過合理控制搜索步長,可以使得計算耗時在一定條件下最小。仿真實驗驗證了該方法的有效性,該方法具有較高的估計精度以及抗噪性能。
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  • 文章訪問數:  1614
  • HTML全文瀏覽量:  130
  • PDF下載量:  506
  • 被引次數: 0
出版歷程
  • 收稿日期:  2015-01-21
  • 修回日期:  2015-03-13
  • 刊出日期:  2015-09-19

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