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基于距离谱分析的方位多通道HRWS SAR通道偏差稳健估计

房超 刘艳阳 索志勇 李真芳 陈筠力

房超, 刘艳阳, 索志勇, 李真芳, 陈筠力. 基于距离谱分析的方位多通道HRWS SAR通道偏差稳健估计[J]. 电子与信息学报, 2018, 40(7): 1561-1566. doi: 10.11999/JEIT170996
引用本文: 房超, 刘艳阳, 索志勇, 李真芳, 陈筠力. 基于距离谱分析的方位多通道HRWS SAR通道偏差稳健估计[J]. 电子与信息学报, 2018, 40(7): 1561-1566. doi: 10.11999/JEIT170996
FANG Chao, LIU Yanyang, SUO Zhiyong, LI Zhenfang, CHEN Junli. Robust Channel Mismatch Estimation in Multichannel HRWS SAR Based on Range Spectrum Analysis[J]. Journal of Electronics & Information Technology, 2018, 40(7): 1561-1566. doi: 10.11999/JEIT170996
Citation: FANG Chao, LIU Yanyang, SUO Zhiyong, LI Zhenfang, CHEN Junli. Robust Channel Mismatch Estimation in Multichannel HRWS SAR Based on Range Spectrum Analysis[J]. Journal of Electronics & Information Technology, 2018, 40(7): 1561-1566. doi: 10.11999/JEIT170996

基于距离谱分析的方位多通道HRWS SAR通道偏差稳健估计

doi: 10.11999/JEIT170996
基金项目: 

国家自然科学基金(61471276, 61601298, 61671355, 41371439)

详细信息
    作者简介:

    房超:房 超: 男,1989年生,博士生,研究方向为机载方位多通道SAR /InSAR信号处理. 刘艳阳: 男,1987年生,高级工程师,研究方向为星载SAR/InSAR系统仿真与信号处理. 索志勇: 男,1978年生,副教授,研究方向为SAR/InSAR系统分析和信号处理. 李真芳: 男,1977年生,教授,研究方向为SAR/InSAR系统分析与信号处理. 陈筠力: 男,1971年生,研究员,研究方向为星载SAR/InSAR系统设计.

  • 中图分类号: TN958

Robust Channel Mismatch Estimation in Multichannel HRWS SAR Based on Range Spectrum Analysis

Funds: 

The National Natural Science Foundation of China (61471276, 61601298, 61671355, 41371439)

  • 摘要: 在方位多通道高分辨宽测绘带合成孔径雷达(HRWS SAR)系统中,通道间幅相偏差和通道时延偏差将会导致多普勒解模糊性能下降。为了解决该问题,该文提出一种基于距离频谱分析的方位多通道HRWS SAR通道偏差稳健估计方法。该算法分为两步:第1步,通过对相邻通道回波距离频谱的干涉相位进行相位解缠绕和加权多项式拟合,从而获得通道时延偏差的稳健估计;第2步,基于空间互相关理论,根据通道间常数干涉相位同时估计基带多普勒中心和通道间相位偏差。相比于传统算法,该算法克服了相位缠绕和跳变对系数估计的影响,提高了算法稳健性,而且能同时估计基带多普勒中心和通道相位偏差。实测及仿真数据处理验证了该算法的稳健性和精确性。
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出版历程
  • 收稿日期:  2017-10-24
  • 修回日期:  2018-04-11
  • 刊出日期:  2018-07-19

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