基于三阶多项式傅里叶变换的SAR地面加速运动目标参数估计与成像

周辉; 赵凤军; 杨健

doi:10.11999/JEIT150679

基于三阶多项式傅里叶变换的SAR地面加速运动目标参数估计与成像

doi: 10.11999/JEIT150679

2.
(中国科学院电子学研究所北京 100190) ②(中国科学院大学北京 100049) ③(中国运载火箭技术研究院北京 100076)

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出版历程
- 收稿日期: 2015-06-04
- 修回日期: 2015-10-09
- 刊出日期: 2016-04-19

SAR Accelerating Moving Target Parameter Estimation and Imaging Based on Three-order Polynomial Fourier Transform

2.
(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)

摘要

摘要: 该文主要针对加速运动目标的参数估计及成像问题，推导了加速度目标的SAR回波频谱，分析了回波相位三次项估计和补偿对运动参数估计和SAR成像的必要性。提出一种利用Hough变换估计距离走动率和径向速度、相位补偿法校正距离徙动效应，并基于三阶多项式傅里叶变换(LPFT)对三次相位估计的新方法。利用Hough变换，在不明显增加计算量的前提下，达到加速运动目标的运动参数精确估计和精确聚焦成像的目的。最后通过仿真数据验证了该算法的有效性。
- 合成孔径雷达 /
- 地面运动目标成像 /
- 加速度估计 /
- 三阶多项式傅里叶变换 /
- Hough变换
Abstract: This paper aims at the issue of accelerating moving target parameter estimation and imaging. The SAR echo spectrum of target with acceleration is calculated, and the necessity of estimation and compensation of the three-order moving target echo phase to imaging and movement parameter estimation is analyzed. Then, a Novel algorithm is proposed to estimate range cell migration rate and range velocity by Hough transform, compensate the range cell migration by phase compensation, and estimate the three-order phase using three-order Local Polynomial Fourier Transform (LPFT). Using the parameter estimated by Hough transform, the movement parameters can be precisely estimated and image well focused without increasing the calculation significantly. Simulated data processing results are provided to demonstrate the effectiveness of the proposed algorithm.
- SAR /
- Ground Moving Target Imaging　(GMTIm) /
- Acceleration estimation /
- Three-order Local Polynomial Fourier Transform (LPFT) /
- Hough transform

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ZHOU Feng, XING Mengdao, and BAO Zheng. Approach for single channel SAR ground moving target imaging and motion parameter estimation[J]. IET Radar, Sonar Navigation, 2007, 1(1): 59-66.

SUN Guangcai, XING Mengdao, XIA Xianggen,et al. Robust ground moving-target imaging using deramp keystone processing[J]. IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(2): 966-981.

YANG J, LIU C, and WANG Y F. Imaging and parameter estimation of fast-moving targets with single-antenna SAR[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(2): 529-533.

YANG J G, HUANG X T, JIN T, et al. New approach for SAR imaging of ground moving targets based on a keystone transform[J]. IEEE Geoscience and Remote Sensing Letters, 2011, 8(4): 829-833.

汤立波, 李道京, 吴一戎, 等. 机载SAR的地面运动目标成像处理[J]. 系统工程与电子技术, 2005, 27(10): 1681-1686.

TANG Libo, LI Daojing, WU Yirong, et al. Imaging of ground moving targets based on airborne SAR[J]. Systems Engineering and Electronics, 2005, 27(10): 1681-1686.

CAO Yufei, QU Xiaoguang, and HUANG Peikang. Research on keystone formatting based on non-baseband interpolation [J]. Journal of Systems Engineering and Electronics, 2010, 21(4): 562-565.

朱圣棋, 廖桂生, 曲毅, 等. 机载正侧视合成孔径雷达地面运动目标参数估计方法[J]. 电子学报, 2010, 38(12): 2757-2762.

ZHU Shengqi, LIAO Guisheng, QU Yi, et al. An approach of ground moving target motion parameter estimation for airborne side looking SAR system[J]. Acta Electronica Sinica, 2010, 38(12): 2757-2762.

YANG Jungang, HUANG Xiaotao, JIN Tian, et al. New approach for SAR imaging of ground moving targets based on a keystone transform[J]. IEEE Geoscience and Remote Sensing Letters, 2011, 8(4): 829-833.

盛蔚, 毛士艺. 地面多个运动目标成像及定位问题的研究[J]. 系统工程与电子技术, 2003, 25(9): 1074-1078.

SHENG Wei and MAO Shiyi. Research on the imaging and location for multiple ground moving targets[J]. Systems Engineering and Electronics, 2003, 25(9): 1074-1078.

康雪艳, 杨汝良. 一种有效的机载合成孔径雷达动目标成像方法[J]. 测试技术学报, 2004, 18(3): 214-218.

KANG Xueyan and YANG Ruliang. An effective imaging method of moving targets in airborne SAR real data[J]. Journal of Test and Measurement Technology, 2004, 18(3): 214-218.

KATKOVNIK V. A new form of the Fourier transform for time-frequency estimation[J]. Signal Processing, 1995, 47 (2): 187-200.

DJUROVIC I , THAYAPARAN T, and STANKOVIC L. SAR imaging of moving targets using polynomial Fourier transform[J]. IET Signal Processing, 2008, 2(3): 237-246.

QU Changwen, HE You, SU Feng, et al. SAR moving targets detection based on the chirp-Fourier transform[C]. IEEE International Radar Conference, Arlington, 2005: 802-805.

STANKOVIC LJUBISA and DJUKANOVIC Slobodan. Order adaptive local polynomial FT based interference rejection in spread spectrum communication systems[J]. IEEE Transactions on Instrumentation and Measurement, 2005, 54(6): 2156-2162.

刘颖, 陈殿仁, 陈磊, 等. 基于周期Choi-Williams Hough变换的线性调频连续波信号参数估计算法[J]. 电子与信息学报, 2015, 37(5): 1135-1140. doi: 10.11999/JEIT140876.

LIU Ying, CHEN Dianren, CHEN Lei, et al. Parameters estimation algorithm of linear frequency modulated continuous wave signals based on period Choi-Williams Hough transform[J]. Journal of Electronics Information Technology, 2015, 37(5): 1135-1140. doi: 10.11999/ JEIT140876.

刘建成, 王雪松, 肖顺平, 等. 基于Wigner-Hough变换的径向加速度估计[J]. 电子学报, 2005, 33(12): 2236-2238.

LIU Jiancheng, WANG Xuesong, XIAO Shunping, et al. Radial Acceleration Estimation Based on Wigner-Hough Transform [J]. Acta Electronica Sinica, 2005, 33(12): 2236-2238.

问翔, 刘宏伟, 包敏. 一种距离扩展目标的Hough变换检测器[J]. 电子与信息学报, 2015, 37(5): 1104-1110. doi: 10.11999/ JEIT140692.

WEN Xiang, LIU Hongwei, and BAO Min. A Hough transformation detector for range spread target[J]. Journal of Electronics Information Technology, 2015, 37(5): 1104-1110. doi: 10.11999/JEIT140692.

阮航, 吴彦鸿, 叶伟. 基于FRFT-CLEAN的机动目标逆合成孔径激光雷达成像算法[J]. 电子与信息学报, 2013, 35(7): 1540-1546. doi: 10.3724/SP.J.1146.2012.01423.

RUAN Hang, WU Yanhong, and YE Wei. Inverse Synthetic aperture radar imaging algorithm for maneuvering target based on FRFT-CLEAN[J]. Journal of Electronics Information Technology, 2013, 35(7): 1540-1546. doi: 10.3724/SP.J.1146.2012.01423.

YANG Jian, LIU Chang, and WANG Yanfei. Detection and imaging of ground moving targets with real SAR data [J]. IEEE Transactions on Geoscience and Remote Sensing, 2015, 53(2): 920-923.

周辉, 赵凤军, 禹卫东, 等. 基于非理想运动误差补偿的SAR地面运动目标成像[J]. 雷达学报, 2015, 4(3): 265-275.

ZHOU Hui, ZHAO Fengjun, YU Weidong, et al. SAR imaging of ground moving targets with non-ideal motion error compensation[J]. Journal of Radars, 2015, 4(3): 265-275.

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