Focusing of highly-squinted bistatic SAR using the nonlinear CS algorithm for constant-offset configuration

被引：2

作者：

Chen, Shichao ^{[1
]}

Xing, Mengdao ^{[1
]}

Bao, Zheng ^{[1
]}

机构：

[1] National Key Lab. of Radar Signal Processing, Xidian Univ.

来源：

Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2014年 / 41卷 / 03期

关键词：

Bistatic synthetic aperture radar; Nonlinear chirp-scaling algorithm; Radar imaging;

D O I：

10.3969/j.issn.1001-2400.2014.03.001

中图分类号：

TN95 [雷达];

学科分类号：

080906 [电磁信息功能材料与结构];

摘要：

Focusing on the range variance of the range cell migration (RCM) and the second range compression (SRC) for tandem bistatic SAR with high squinted angles, a nonlinear chirp scaling algorithm (NCSA) is proposed to handle the problems based on an exact analytical bistatic spectrum. Unlike the chirp scaling (CS) imaging algorithm which is suitable for the case with small squint angles, not only is the variation with the Doppler frequency considered for the Doppler chirp rate, but also its variation with range is taken into account. The proposed algorithm can compensate the SRC for tandem bistatic SAR well. Satisfactory results are obtained with simulated experiments.

引用

页码：1 / 7

页数：6

共 18 条

[1]

He Z., He F., Chen J., Et al., Echo-domain phase synchronization algorithm for bistatic SAR in alternating bistatic/Ping-Pang Mode, IEEE Geoscience and Remote Sensing Letters, 9, 4, pp. 604-608, (2012)

[2]

Yi Y., Zhang L., Liu X., Et al., Method for geometric distortion correction of the bistatic SAR, Journal of Xidian University, 37, 2, pp. 231-234, (2010)

[3]

Wang X., Zhu D., Mao X., Et al., Space-variant filtering for wavefront curvature correction in polar formatted bistatic SAR image, IEEE Transactions on Aerospace and Electronic Systems, 48, 2, pp. 940-950, (2012)

[4]

Barber B., Theory of digital imaging from orbit synthetic aperture radar, International Journal of Remote Sensing, 6, 7, pp. 1009-1057, (1985)

[5]

Rodriguez-Cassola M., Prats P., Krieger G., Et al., Efficient time-domain image formation with precise topography accommodation for general bistatic SAR configurations, IEEE Transactions on Aerospace and Electronic Systems, 47, 4, pp. 2949-2966, (2011)

[6]

D'ariad D., Guarnieri A.M., Rocca F., Focusing bistatic synthetic aperture radar using dip move out, IEEE Transactions on Geoscience and Remote Sensing, 42, 7, pp. 1362-1376, (2004)

[7]

Wang R., Loffeld O., Neo Y., Et al., Extending Loffeld's bistatic formula for the general bistatic SAR configuration, IET Radar, Sonar and Navigation, 4, 1, pp. 74-84, (2010)

[8]

Neo Y., Wong F., Cumming G.I., A two-dimensional spectrum for bistatic SAR processing using series reversion, IEEE Geoscience and Remote Sensing Letters, 4, 1, pp. 93-96, (2007)

[9]

Zhang Z., Xing M., Ding J., Et al., Focusing parallel bistatic SAR data using the analytic transfer function in the wavenumber domain, IEEE Transactions on Geoscience and Remote Sensing, 45, 11, pp. 3633-3645, (2007)

[10]

Wang R., Deng Y., Loffeld O., Et al., Processing the azimuth-variant bistatic SAR data by using monostatic imaging algorithms based on two-dimensional principle of stationary phase, IEEE Transactions on Geoscience and Remote Sensing, 49, 10, pp. 3504-3520, (2011)

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