一种改进匹配滤波器组的方位向速度估计方法

doi:10.3969/j.issn.1001-2400.2012.06.031

Abstract

Abstract:

Conventional approaches to the along-track velocity estimation are affected by the serious range walk which is induced by the fast across-track velocity. A novel approach via improved matched filter banks is used to solve the aforementioned problem. The proposed approach analyzes the signal expression of moving targets in different domains. In the range frequency and Doppler frequency domain, both the linear frequency modulation in the azimuth direction and the range walk are exhibited in the same exponential term. We can construct filter banks with different along-track velocities in this domain to match the filter. As a result, the along-track velocity can be estimated by searching the peak magnitude. Comparing to conventional approaches, the approach to the along-track velocity estimation is independent of across-track velocity estimation. Moreover, it is not affected by the range walk. The proposed approach can be applied to both airborne and spaceborne SAR systems. The effectiveness and robustness of the proposed approach are demonstrated by simulated and real data.

Key words: synthetic aperture radar (SAR), parameter estimation, matched filter banks, Doppler ambiguity number

CLC Number:

TN957

XU Ruipeng;HU Donghui;DING Chibiao;ZHANG Dandan;LIU Haijun. Approach to along-track velocity estimation via improved matched filter banks[J].J4, 2012, 39(6): 187-194.

References

［1］ Raney R K. Synthetic Aperture Imaging Radar and Moving Targets ［J］. IEEE Trans on Aerospace and Electronic Systems, 1971, 7(3): 499-505.
［2］ Kirscht M. Detection and Imaging of Arbitrary Moving Targets with Single-channel SAR ［J］. IET Radar Sonar Navigation, 2003, 150(1): 1984-1992.
［3］郑明洁, 杨汝良. 一种改进的DPCA运动目标检测方法［J］. 电子学报, 2004, 32(9): 1429-1432.
Zheng Mingjie, Yang Ruliang. SAR Weak Moving Target Detection Based on Hybird Integration ［J］. Acta Electronica Sinica, 2004, 32(9): 1429-1432.
［4］ Sikaneta I, Gierulll C H. Ground Moving Target Detection for Along-track Interferometric SAR Data ［C］//IEEE Aerospace Conference, Big Sky: IEEE, 2004: 2227-2235.
［5］ Klemm R. Introduction to Space-time Adaptive Processing ［J］. Electronics ＆ Communication Engineering Journal, 1999, 11(1): 5-12.
［6］ Manasse R. Idealized Radar GMTI Detection with Space-Time Processing ［J］. IEEE Trans on Aerospace and Electronic Systems, 2009, 45(4): 1610-1618.
［7］ Zhou F, Wu R, Xing M, et al. Approach for Single Channel SAR Ground Moving Target Imaging and Motion Parameter Estimation ［J］. IET Radar Sonar Navigation, 2007, 1(1): 59-66.
［8］ Barbarossa S, Farina A. Detection and Imaging of Moving Objects with Synthetic Aperture Radar Part 2: Joint Time-frequency Analysis by Wigner-Ville Distribution ［J］. Electronics ＆ Communication Engineering Journal, 1992, 139(1): 89-97.
［9］ Gierull C H. Moving Target Detection with Along-track SAR Interferomery—a Theoretical Analysis ［R］. Defense R＆D Canada-Ottawa Technical Report, 2002.
［10］ Gierull C H, Sikaneta I. Ground Moving Target Parameter Estimation for Two-channel SAR ［C］//EUSAR Conference. Ulm: VDE, 2004: 799-802.
［11］ Palubinskas G, Meyer F, Runge H, et al. Estimation of Along-track Velocity of Road Vehicles in SAR Data ［C］//Proceeding of SPIE, Image and Signal Processing for Remote Sensing. Bellingham: ISPRS, 2005: 821-829.
［12］ Fienup J R. Detecting Moving Targets in SAR Imagery by Focusing ［J］. IEEE Trans on Aerospace and Electronic Systems, 2001, 37(3): 794-809.
［13］ Kirkland D. Using the Keystone Transform for Detection of Moving Targets ［C］//EUSAR Conference. Aachen: VDE, 2010: 305-308.
［14］ Zhu Shengqi, Liao Guisheng, Qu Yi, et al. A New Slant-range Velocity Ambiguity Resolving Approach of Fast Moving Targets for SAR System ［J］. IEEE Trans on Geosciences and Remote Sensing, 2010, 48(1): 432-451.
［15］钱江, 吕孝雷, 李凉海, 等. 机载三通道SAR/GMTI快速目标运动参数估计［J］. 西安电子科技大学学报, 2010, 37(2): 235-241.
Qiang Jiang, Lü Xiaolei, Li Lianghai, et al. Parameter Estimation of the Fast Moving Target Based on Tri-channel Airborne SAR-GMTI ［J］. Journal of Xidian University, 2010, 37(2): 235-241.
［16］ Guo J, Li Z F, Bao Z. Adaptive Clutter Suppression and Resolving of Velocity Ambiguities for an Experimental Three-channel Airborne Synthetic Aperture Radar Ground Moving Target Indication System ［J］. IET Radar Sonar Navigation, 2011, 5(4): 426-435.
［17］ Wu Qisong, Xing M.engdao, Liu Baochang, et al. Motion Parameter Estimation in the SAR System with Low PRF Sample ［J］. IEEE Trans on Geosciences and Remote Sensing, 2010, 7(2): 450-454.
［18］ Xu Ruipeng, Zhang Dandan, Hu Donghui, et al. A Novel Motion Parameter Estimation Algorithm of Fast Moving Targets via Single-Antenna Airborne SAR System ［J］. IEEE Geosciences and Remote Sensing Letter, 2012, 9(5): 920-924.
［19］ Zhu Shengqi, Liao Guisheng, Qu Yi, et al. Ground Moving Targets Imaging Algorithm for Synthetic Aperture Radar ［J］. IEEE Trans on Geosciences and Remote Sensing, 2011, 49(1): 462-477.

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Approach to along-track velocity estimation via improved matched filter banks

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