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
-
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.
-
R.K. Raney, Synthetic aperture imaging radar and moving targets, IEEE Trans. on AES, 1971,AES-7(3), 490-495.[2]J. Ender, et al., Airborne MTI via digital filtering, Proc. IEE, 1989, 136(1), 22-28.[3]A. Freeman, A. Currie, Synthetic aperture radar imaging of moving targets, The GEC Journal of Research, 1987, 5(2), 106-115.[4]Zhao Zhiqin.[J].Huang Shunji, A research of moving targets detection and imaging of SAR, Proc.EUSAR96, Konigswinter, Germany.1996,:-[5]李刚,朱敏慧,朱锡兴,基于小波变换的SAR运动目标多普勒参数提取算法,电子科学学刊,1998,20(2),151-156[6]S. Barbarossa, Doppler-rate filtering for detecting moving target with synthetic aperture radars,Proc. SPIE, 1989, 140-147.[7]何峻湘,WVD用于SAR运动目标检测和成像的参数估计,电子科学学刊,1995,17(6),585-590[8]李刚,何映霞,朱敏慧,基于小波变换的机载SAR运动目标检测方法,中国电子学会电路与系统学会第十四届年会论文集,1998年4月,福州,169-174[9][美]崔锦泰著,程正兴译,小波分析导论,西安,西安交通大学出版社,1995,43-135. -
计量
- 文章访问数: 2225
- HTML全文浏览量: 137
- PDF下载量: 534
- 被引次数: 0
下载:
