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The ordinary SAR imaging algorithms are inapplicable to missile-bo-rne SAR due to the high speed dive and high-squint of missile. Aiming at this problem, this paper firstly sets up the model of echo and analyses of two-dimensional spectrum. By using azimuth nonlinear chirp scaling (NLCS) based on variable decoupling, an imaging algorithm for missile-borne SAR is proposed.It can effectively compensate the scene with longitudinal and transverse Doppler shift and improve the focusing quality while it can also simplify the geometric image correction operation. Simulation results are provided to confirm the effectiveness of the proposed algorithm.
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Keywords:
- missile-borne SAR /
- nonlinear chirp scaling /
- large-scale scene /
- diving acceleration
[1] Chen S, Zhao H C, Zhang S N, Chen Y 2013 Acta Phys. Sin. 62 218406 (in Chinese)[陈思, 赵惠昌, 张淑宁, 陈勇 2013 62 218406]
[2] Yi Y S 2009 Ph. D. Dissertation(Xi’an: XiDian University) (in Chinese) [易予生2009 博士论文(西安: 电子科技大学)]
[3] Zhou P 2011 Ph. D. Dissertation(Xi’an: XiDian University) (in Chinese) [周鹏2011 博士论文(西安: 电子科技大学)]
[4] Zhou S, Bao M, Zhou P, Xing M D, Bao Z 2011 J. Electron. Inf. Tech. 33 1421(in Chinses) [周松, 包敏, 周鹏, 邢孟道, 保铮2011 电子与信息学报33 1421]
[5] Wang Z, He X D, Tang B 2013 J. Data Acquis. Process. 28 479 (in Chinsess) [王珍, 和小冬, 唐斌2013 数据采集与处理28 479]
[6] Xiao Z Y, Xu H P, Li C S 2013 J. Electron. Inf. Tech. 35 1090 (in Chinse) [肖忠源, 徐华平, 李春升2013 电子与信息学报35 1090]
[7] Wong F H, Cumming I G, Neo Y L 2008 IEEE Trans. Geosci. Remote Sens. 46 2493
[8] Davidson G W, Cumming I G 1996 IEEE Trans. Aerosp. Electro. Syst. 32 121
[9] Milman A S 1993 Int. J. Remote Sens. 14 1965
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[1] Chen S, Zhao H C, Zhang S N, Chen Y 2013 Acta Phys. Sin. 62 218406 (in Chinese)[陈思, 赵惠昌, 张淑宁, 陈勇 2013 62 218406]
[2] Yi Y S 2009 Ph. D. Dissertation(Xi’an: XiDian University) (in Chinese) [易予生2009 博士论文(西安: 电子科技大学)]
[3] Zhou P 2011 Ph. D. Dissertation(Xi’an: XiDian University) (in Chinese) [周鹏2011 博士论文(西安: 电子科技大学)]
[4] Zhou S, Bao M, Zhou P, Xing M D, Bao Z 2011 J. Electron. Inf. Tech. 33 1421(in Chinses) [周松, 包敏, 周鹏, 邢孟道, 保铮2011 电子与信息学报33 1421]
[5] Wang Z, He X D, Tang B 2013 J. Data Acquis. Process. 28 479 (in Chinsess) [王珍, 和小冬, 唐斌2013 数据采集与处理28 479]
[6] Xiao Z Y, Xu H P, Li C S 2013 J. Electron. Inf. Tech. 35 1090 (in Chinse) [肖忠源, 徐华平, 李春升2013 电子与信息学报35 1090]
[7] Wong F H, Cumming I G, Neo Y L 2008 IEEE Trans. Geosci. Remote Sens. 46 2493
[8] Davidson G W, Cumming I G 1996 IEEE Trans. Aerosp. Electro. Syst. 32 121
[9] Milman A S 1993 Int. J. Remote Sens. 14 1965
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