Approach for fast-moving target detection and imaging in FMCW SAR

被引：0

作者：

Wang, Jin-Wei ^{[1
]}

Zhou, Feng ^{[1
]}

Wu, Yu-Feng ^{[1
]}

Sun, Guang-Cai ^{[1
]}

Zhang, Zi-Jing ^{[1
]}

机构：

[1] Key Laboratory of Radar Signal Processing, Xidian University, Xi'an

来源：

Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2014年 / 36卷 / 11期

关键词：

Frequency Modulated Continuous Wave (FMCW); Ground Moving Target Indication (GMTI) and imaging; SAR;

D O I：

10.3724/SP.J.1146.2013.01769

中图分类号：

学科分类号：

摘要：

To resolve the problem of fast-moving target detection and imaging in Frequency Modulated Continuous Wave SAR (FMCW-SAR), a new method of moving target detection and imaging in double-channel FMCW-SAR is presented in this paper. Considering the inherent characteristics of FMCW, the stationary clutter is eliminated and moving targets are detected by combining the Doppler frequency shift compensation with Displaced Phase Center Antenna (DPCA) technology. To solve the problem of fast-moving targets defocus and Doppler spectrum split, one method combining the Keystone transform with azimuth deramp is presented to refocus fast-moving targets. Finally, simulation results are provided to demonstrate the effectiveness and feasibility of the proposed method. ©, 2014, Science Press. All right reserved.

引用

页码：2684 / 2690

页数：6

共 18 条

[1]

Zhang J.-J., Zhou F., Sun G.-C., Et al., Study on three channels squint SAR-GMTI system based on the forward-looking airborne radar, Journal of Electronics & Information Technology, 34, 2, pp. 344-350, (2012)

[2]

Deng Y.-K., Zhao F.-J., Wang Y., Brief analysis on the development and appliecation of spaceborne SAR, Journal of Radars, 1, 1, pp. 1-10, (2012)

[3]

Wu M.-Y., Yang T.-L., Wu S.-J., Et al., Ground moving target indication for spaceborne multi-channel high resolution wide swath SAR system, Journal of Electronics & Information Technology, 36, 2, pp. 441-444, (2014)

[4]

Cristallini D., Pastina D., Colone F., Et al., Efficient detection and imaging of moving targets in SAR images based on chirp scaling, IEEE Transactions on Geoscience and Remote Sensing, 51, 4, pp. 2403-2416, (2013)

[5]

Zhang F.-H., Wang Y.-F., An improved FS algorithm for range anti-aliasing of FMCW SAR, Journal of Radars, 1, 1, pp. 76-81, (2012)

[6]

Meta A., Hoogeboom P., Ligthart L.P., Signal processing for FMCW SAR, IEEE Transactions on Geoscience and Remote Sensing, 45, 11, pp. 3519-3532, (2007)

[7]

Wang R., Loffeld O., Nies H., Et al., Focus FMCW SAR data using the wavenumber domain algorithm, IEEE Transactions on Geoscience and Remote Sensing, 48, 4, pp. 2109-2118, (2010)

[8]

Ma B.-Q., Yu B.-B., Liu C., Et al., A 2-D Fourier domain algorithm for stripmap FMCW-SAR raw signal simulation, Journal of Electronics & Information Technology, 33, 2, pp. 375-380, (2011)

[9]

Ribalta A., Time-domain reconstruction algorithms for FMCW SAR, IEEE Geoscience and Remote Sensing Letters, 8, 3, pp. 396-400, (2011)

[10]

Liang Y., Wang H.-X., Xing M.-D., Et al., Slow ground moving target parameter estimation and imaging in FMCW SAR systems, Engineering and Electronics, 33, 5, pp. 1001-1006, (2011)

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