一种改进的方位多通道SAR误差校正方法

doi:10.3969/j.issn.1001-2400.2017.03.003

Abstract

Abstract:

In multichannel synthetic aperture radar (SAR) imaging, the orthogonality of the noise subspace and the signal subspace is usually adopted to estimate the channel error. The division of the subspace is based on the number of ambiguity components. In order to avoid the effect of the inaccurate ambiguity components on the subspace division and the channel error estimation, an improved channel error calibration method is proposed, which can lead to the accurate information on the ambiguity components by the spatial spectrum estimation and calibrate the channel error precisely. The real data results validate the method.

Key words: azimuth multichannel SAR, channel error, subspace, Doppler ambiguity

ZUO Shaoshan;SUN Guangcai;XING Mengdao. Improved channel error calibration method for the azimuth multichannel SAR[J].Journal of Xidian University, 2017, 44(3): 13-18.

References

［1］ SIKANETA I, GIERULL C H, CERUTTI-MAORI D. Optimum Signal Processing for Multichannel SAR: with Application to High-resolution Wide-swath Imaging ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(10): 6095-6109.
［2］ LIU B C, HE Y J. Improved DBF Algorithm for Multichannel High-resolution Wide-swath SAR ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2016, 54(2): 1209-1225.
［3］张双喜. 高分辨宽测绘带多通道SAR和动目标成像理论与方法［D］. 西安: 西安电子科技大学, 2014.
［4］ LIU Y Y, CUI L, XU Y S, et al. A Novel Signal-cancellation-based Channel Phase BIAS Calibration Algorithm for Spaceborne Multi-channel HR-WS SAR in Azimuth ［C］//Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar. Piscataway: IEEE, 2015: 494-497.
［5］ LI Z F, WANG H Y, SU T, et al. Generation of Wide-swath and High-resolution SAR Images from Multichannel Small Spaceborne SAR Systems ［J］. IEEE Geoscience and Remote Sensing Letters, 2005, 2(1): 82-86.
［6］ LI Z F, BAO Z,WANG H Y, et al. Performance Improvement for Constellation SAR Using Signal Processing Techniques ［J］. IEEE Transactions on Aerospace and Electronic Systems, 2006, 42(2): 436-452.
［7］ ZHANG S X, XING M D, XIA X G, et al. Multichannel HRWS SAR Imaging Based on Range-variant Channel Calibration and Multi-Doppler-direction Restriction Ambiguity Suppression［J］. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(7): 4306-4327.
［8］ ZHANG S X, XING M D, XIA X G, et al. A Robust Imaging Algorithm for Squint Mode Multi-channel High-resolution and Wide-swath SAR with Hybrid Baseline and Fluctuant Terrain ［J］. IEEE Journal of Selected Topics in Signal Processing, 2015, 9(8): 1583-1598.
［9］ GUO X J, GAO Y S, WANG K Z, et al. Improved Channel Error Calibration Algorithm for Azimuth Multichannel SAR Systems ［J］. IEEE Geoscience and Remote Sensing Letters, 2016, 13(7): 1022-1026.
［10］刘君, 廖桂生, 王洪洋. 信源数目过估计和欠估计下MUSIC算法分析［J］. 现代雷达, 2004, 26(2): 52-60.
LIU Jun, LIAO Guisheng, WANG Hongyang. Performance Analysis of the MUSIC Algorithm under the over or under Estimation of Source Number Condition ［J］. Modern Radar, 2004, 26(2): 52-60.

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Improved channel error calibration method for the azimuth multichannel SAR

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