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基于时间-调频斜率分布的多普勒调频率估计

汪金真 宿绍莹 陈曾平

汪金真, 宿绍莹, 陈曾平. 基于时间-调频斜率分布的多普勒调频率估计[J]. 电子与信息学报, 2015, 37(9): 2138-2143. doi: 10.11999/JEIT150116
引用本文: 汪金真, 宿绍莹, 陈曾平. 基于时间-调频斜率分布的多普勒调频率估计[J]. 电子与信息学报, 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 and 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 and Information Technology, 2015, 37(9): 2138-2143. doi: 10.11999/JEIT150116

基于时间-调频斜率分布的多普勒调频率估计

doi: 10.11999/JEIT150116

Estimation of Doppler Rate Based on Time-chirp Distribution

  • 摘要: 该文提出基于时间-调频斜率分布(TCD)的目标回波线性调频(LFM)信号的多普勒调频斜率估计算法。分析目标回波LFM信号的TCD表明自项和交叉项均在多普勒调频斜率处取得极大值,采用垂直调频斜率轴投影积分可以有效抑制TCD的非多普勒调频斜率交叉项及噪声,增强多普勒调频斜率项。同时,采用二次搜索方法搜索TCD投影积分量最大值保证多普勒调频斜率估计精度,有效减少运算量;理论分析表明,通过合理控制搜索步长,可以使得计算耗时在一定条件下最小。仿真实验验证了该方法的有效性,该方法具有较高的估计精度以及抗噪性能。
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    Du Yu-ming and Yang Jian-yu. Superimposed LFM signals detection and parameter estimation based on time-frequency rate distribution[J]. Journal of Electronics Information Technology, 2007, 29(3): 631-634.
    杜雨洺, 杨建宇. LFM信号时间调-频斜率分布交叉项抑制方法[J]. 系统工程与电子技术, 2010, 32(2): 229-231.
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  • 被引次数: 0
出版历程
  • 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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