步进调频SAR子带误差估计新方法

doi:10.3969/j.issn.1001-2400.2014.04.008

Abstract

Abstract:

To reconstruct the spectrum of a wide band signal by stepped-frequency chirp signals, the mismatch between sub-band signals should be compensated, a novel method is proposed in this paper to estimate the sub-band errors depending on the overlap spectra between sub-band signals, with the amplitude-phase error and the time delay error between sub-band signals estimated by fitting the interferometric phase of the overlap spectra components. Besides, the window for eliminating the ghost images caused by the overlap spectra is proposed. Finally, the computer simulation and the ground-based real data confirm the validity of the method.

Key words: synthetic aperture radar, high range resolution, stepped frequency, sub-band error

CLC Number:

TN957

WU Mingyu;YANG Taoli;WU Shunjun;LI Zhenfang. Novel error estimation method for stepped frequency chirp SAR[J].J4, 2014, 41(4): 41-46+70.

References

［1］ Wehner D R. High-resolution radar ［M］. 2nd ed. Norwood: Artech House, 1995.
［2］王岩飞, 刘畅, 李和平, 等. 基于多通道合成的优于01m分辨率的机载SAR系统［J］. 电子与信息学报, 2013, 35(1): 29-35.
Wang Yanfei, Liu Chang, Li Heping, et al. An Airborne SAR with 01m Resolution Using Multi-channel Synthetic Bandwidth ［J］. Journal of Electronics ＆ Information Technology, 2013, 35(1): 29-35.
［3］刘峥, 刘宏伟, 张守宏. 步进频率信号分析［J］. 西安电子科技大学学报, 1999, 26(1): 71-74.
Liu Zheng, Liu Hongwei, Zhang Shouhong. Analysis of the Step Frequency Signal ［J］. Journal of Xidian University, 1999, 26(1): 71-74.
［4］刘亚波, 李军, 李亚超, 等. 解线频调步进频率ISAR成像研究［J］. 西安电子科技大学学报, 2010, 37(3): 469-475.
Liu Yabo, Li Jun, Li Yachao, et al. Study on Dechirp SF ISAR Imaging ［J］. Journal of Xidian University, 2010, 37(3): 469-475.
［5］程普, 王展, 方凌江, 等. 调频连续波SAR方位多波束成像［J］. 现代电子技术, 2013, 36(3): 12-20.
Cheng Pu, Wang Zhan, Fang Lingjiang, et al. Imaging of FMCW SAR Using Multiple Azimuth Beams ［J］. Modern Electronics Technique, 2013, 36(3): 12-20.
［6］ Lord R T, Inggs M R. High Resolution SAR Processing Using Stepped-frequencies ［C］//International Geoscience and Remote Sensing Symposium: 1. Piscataway: IEEE, 1997: 490-492.
［7］ Wilkinson A J, Lord R T, Inggs M R. Steppedfrequency Processing by Reconstruction of Target Reflectivity Spectrum ［C］//Proceedings of the 1998 South African Symposium on Communications and Signal Processing. New York: IEEE, 1998: 101-104.
［8］ Deng Y, Zheng H, Wang R, et al. Internal Calibration for Stepped-frequency Chirp SAR Imaging ［J］. IEEE Geoscience and Remote Sensing Letters, 2011, 8(6): 1105-1109.
［9］郜参观, 邓云凯, 冯锦. 通道失配对多通道子带合成SAR性能的影响分析与补偿［J］. 电子与信息学报, 2012, 34(1): 154-159.
Gao Canguan, Deng Yunkai, Feng Jin. Influences of Mismatch on the Multi-channel Synthetic-bandwidth SAR System and the Corresponding Correction Measure ［J］. Journal of Electronics ＆ Information Technology, 2012, 34(1): 154-159.
［10］孙林, 田卫明, 曾涛. 调频步进频雷达中距离起点误差分析［J］. 电子与信息学报, 2012, 34(5): 1070-1075.
Sun Lin, Tian Weiming, Zeng Tao. Error Analysis of Beginning Sampling Range in Stepped Chirp Radars ［J］. Journal of Electronics ＆ Information Technology, 2012, 34(5): 1070-1075.
［11］ Brenner A R, Ender J H G. First Experimental Results Achieved with the New Very Wideband SAR System PAMIR ［C］//Porceedings of 4th European Conference on Synthetic Aperture Radar . Berlin: VDE Verlag GMBH, 2002: 81-86.

[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.

Novel error estimation method for stepped frequency chirp SAR

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 10