斜视圆迹环扫SAR模式特性分析及成像方法

doi:10.3969/j.issn.1001-2400.2014.01.008

Abstract

Abstract:

Circular scanning SAR(CSSAR) is a new mode for fast large area SAR imaging by increasing the azimuth scanning speed. The squint CSSAR possesses the advantages that the side-looking CSSAR does not have due to its unique observing direction. However, the available signal characteristic analysis and imaging method for side-looking CSSAR become questionable when applied to the squint CSSAR. This paper establishes the echo range model and analyzes several parameters such as azimuth scanning speed, Doppler characteristics and azimuth resolution according to the moving feature of squint CSSAR. Furthermore, the internal relationship between the squint CSSAR and the classical stripmap mode is revealed. The range approximation model as well as the corresponding imaging method is analyzed. Computer simulation results validate the conclusions and the imaging method.

Key words: synthetic aperture radar, squint circular scanning, Doppler parameter, two-dimensional spectrum

LIAO Yi;YANG Zemin;XING Mengdao;BAO Zheng;BAO Min. Analysis of the characteristics of squint circular scanning SAR and its imaging method[J].J4, 2014, 41(1): 38-44+74.

References

［1］周鹏, 李亚超, 邢孟道. 弹载扫描SAR宽测绘带模式成像方法研究［J］. 西安电子科技大学学报, 2011, 38(1): 96-103.
Zhou Peng, Li Yachao, Xing Mengdao. Study of the Imaging Method of the Missile-borne Scan SAR Wide-swath Mode［J］. Journal of Xidian University, 2011, 38(1): 96-103.
［2］邓云凯, 陈倩, 祁海明, 等. 一种基于频域子带合成的多发多收高分辨SAR成像算法［J］. 电子与信息学报, 2011, 33(5): 1082-1087.
Deng Yunkai, Chen Qian, Qi Haiming, et al. A High-resolution Imaging Algorithm for MIMO SAR Based on the Sub-band Synthesis in Frequency Domain［J］. Journal of Electronics ＆ Information Technology, 2011, 33(5): 1082-1087.
［3］周松, 周鹏, 李亚超, 等. 弹载SAR下降段成像算法研究［J］. 西安电子科技大学学报, 2011, 38(3): 90-98.
Zhou Song, Zhou Peng, Li Yachao, et al. Research on the Imaging Algorithm for Missile-borne SAR with Downward Movement［J］. Journal of Xidian University, 2011, 38(3): 90-98.
［4］易予生, 张林让, 刘昕, 等. 双站SAR图像几何失真校正方法研究［J］. 西安电子科技大学学报, 2010, 37(2): 231-234.
Yi Yusheng, Zhang Linrang, Liu Xin, et al. Method for Geometric Distortion Correction of the Bistatic SAR［J］. Journal of Xidian University, 2010, 37(2): 231-234.
［5］钱江, 吕孝雷, 邢孟道, 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.
Qian Jiang, Lü Xiaolei, Xing Mengdao, 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.
［6］马兵强, 于彬彬, 刘畅, 等. 条带FMCW-SAR回波数据的二维频域模拟算法［J］. 西安电子科技大学学报, 2011, 33(2): 375-380.
Ma Bingqiang,Yu Binbin,Liu Chang,et al. A 2-D Fourier Domain Algorithm for StripMap FMCW-SAR Raw Signal Simulation［J］. Journal of Xidian University, 2011, 33(2): 375-380.
［7］井伟, 张磊, 邢孟道, 等. 非匀速平台SAR成像算法研究［J］. 西安电子科技大学学报, 2008, 35(4): 605-608.
Jing Wei, Zhang Lei, Xing Mengdao, et al. Novel Algorithm for the Processing of Non-uniform Motion SAR Data［J］. Journal of Xidian University, 2008, 35(4): 605-608.
［8］ Soumekh M. Reconnaissance with Slant Plane Circular SAR Imaging［J］. IEEE Transactions on Image Processing, 1996, 5(8): 1252-1265.
［9］孙兵, 周荫清, 陈杰, 等. 广域观测圆轨迹环扫SAR成像模式研究［J］. 电子与信息学报, 2008, 30(12): 2805-2808.
Sun Bing, Zhou Yinqing, Chen Jie, et al. Operation Mode of Circular Trace Scanning SAR for Wide Observation［J］. Journal of Electronics ＆ Information Technology, 2008, 30(12): 2805-2808.
［10］ Bara M, Sagues L, Paniagua F, et al. High-speed Focusing Algorithm for Circular Synthetic Aperture Radar［J］. Electronics Letters, 2000, 36(9): 828-830.
［11］ Cumming I G, Wong F H. Digital Processing of Synthetic Aperture Radar Data: Algorithms and Implementation ［M］. Norwood: Artech House, 2005.
［12］ Neo Y L, Wong F H, Cumming I G. A Two-dimensional Spectrum for Bistatic SAR Processing Using Series Reversion［J］. IEEE Geoscience and Remote Sensing Letters, 2007, 4(1): 93-96.
［13］ Neo Y L, Wong F H, Cumming I G. Processing of Azimuth-invariant Bistatic SAR Data Using the Range Doppler Algorithm［J］. IEEE Transactions on Geoscience and Remote Sensing, 2008, 46(1): 14-21.
［14］廖轶, 周松, 邢孟道, 等. 一种基于级数反演的机载圆迹环扫SAR成像算法［J］. 电子与信息学报, 2012, 34(11): 2587-2593.
Liao Yi, Zhou Song, Xing Mengdao, et al. An Imaging Algorithm for Airborne Circular Scanning SAR Based on the Method of Series Reversion［J］. Journal of Electronics ＆ Information Technology, 2012, 34(11): 2587-2593.

[1]	WANG Xin,CHANG Guiqing,CHI Chenchen. Separation and imaging of the anisotropic scattering targets in the wide-angle SAR [J]. Journal of Xidian University, 2021, 48(2): 109-116.
[2]	LU Jinwen,YAN Hua,YIN Hongcheng,ZHANG Lei,DONG Chunzhu. Edge diffraction correction for 3D scattering center modeling based on the shooting and bouncing ray technique [J]. Journal of Xidian University, 2021, 48(2): 117-124.
[3]	TAO Yi,DING Li. Method for digital IQ frequency-domain calibration based on conjugate symmetry [J]. Journal of Xidian University, 2021, 48(2): 181-189.
[4]	HU Liping,YAN Hua,ZHONG Weijun,YIN Hongcheng,WANG Chao. Three-dimensional scattering center modeling and a fast SAR simulation method for ship targets [J]. Journal of Xidian University, 2021, 48(2): 72-83.
[5]	DUAN Chongdi,HAN Chaolei,YANG Zhiwei,ZHANG Qingjun. Inshore ambiguity clutter suppression method aided by clutter classification [J]. Journal of Xidian University, 2021, 48(2): 64-71.
[6]	YANG Jun,ZHOU Fang. Ultra-high resolution imaging method for the distributed small satellite MIMO-SAR [J]. Journal of Xidian University, 2021, 48(2): 99-108.
[7]	WANG Zhihao,ZHANG Jinsong,SUN Guangcai,LI Jun,XING Mengdao. Combined multi-features method for the detection of SAR man-made weak trace [J]. Journal of Xidian University, 2019, 46(6): 131-139.
[8]	YANG Lei,YUE Yunze,LI Pucheng,ZHANG Tao,YANG Huan. Sparse representation of large dynamic range SAR imaging for multiple ground moving targets [J]. Journal of Xidian University, 2019, 46(5): 31-40.
[9]	GUO Rui,ZANG Bo,PENG Shuming,XING Mengdao. Extraction of features of the urban high-rise building from high resolution InSAR data [J]. Journal of Xidian University, 2019, 46(4): 137-143.
[10]	ZENG Chuangzhan,ZHU Weigang,JIA Xin. Sparse-aperture ISAR imaging algorithm [J]. Journal of Xidian University, 2019, 46(3): 123-129.
[11]	LIANG Yi, LI Qingqing, SUN Kun, DANG Yanfeng, DING Jinshan. New method for missile positioning based on SAR scene matching [J]. Journal of Xidian University, 2018, 45(6): 1-6.
[12]	SUN Chen, CHENG Liye. Spatial sensing matrix learning for PolSAR image classification [J]. Journal of Xidian University, 2018, 45(6): 92-98.
[13]	LIU Jiange, MU Dejun. Novel sea ice edge detection method in SAR imagery [J]. Journal of Xidian University, 2018, 45(6): 106-111.
[14]	WANG Yuekun;SUO Zhiyong;LI Zhenfang;ZHANG Jinqiang;ZHANG Qingjun. Improved CS imaging algorithm for the GEO-LEO BiSAR system [J]. Journal of Xidian University, 2018, 45(5): 50-56+196.
[15]	XU Qiang;LI Wei;ZHAN Ronghui;ZOU Kun. Improved algorithm for SAR target recognition based on the convolutional neural network [J]. Journal of Xidian University, 2018, 45(5): 177-183.

Analysis of the characteristics of squint circular scanning SAR and its imaging method

PDF (PC)

Like

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0