基于扩展小波变换的机载SAR运动目标参数估计
AIRBORNE SAR MOVING TARGET PARAMETER ESTIMATION BASED ON EXTENDED WAVELET TRANSFORM
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摘要: 该文在分析机载合成孔径雷达(SAR)运动目标回波信号频谱特点的基础上,基于扩展WVD(EWVD)变换理论提出了扩展小波变换(EWT)算法的基本思想,并针对分别利用扩展WVD变换和扩展小波变换方法进行机载SAR运动目标多普勒参数估计时的特点进行比较分析,指出基于扩展小波变换方法进行机载SAR运动目标回波信号参数估计的可行性及优越性,微机仿真实验结果验证了其结论的正确性。Abstract: This paper presents the basic concept of Extended Wavelet Transform (EWT) algorithm based on Extended WVD (EWVD) transform theory after analyzing the spectrum characteristics of airborne SAR moving-target backscatters, and then takes a comparison and analysis on airborne SAR moving-target Doppler parameters estimation by EWVD and EWT methods respectively. The flexibility and advantage of airborne SAR moving-target Doppler parameters estimation based on EWT method are indicated and the simulating experimental results demonstrate the accuracy of our conclusion.
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