Study on Ground Control Point Locating Strategy for Airborne Along-track Interferometric SAR
Zhang Hui①②③ Hong Jun① Wang Yu① Li Ji-chuan①②
① (Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(University of Chinese Academy of Sciences, Beijing 100049, China) ③(Key Laboratory of Technology in Geo-spatial Information Processing and Application System, Beijing 100190, China)
The accuracy of the radial velocity estimated by the airborne Along-Track Interferometric SAR (ATI-SAR) is affected by the accuracy of different system parameter, such as the interferometric phase biases and the baseline components errors. Therefore, these factors must be calibrated if the higher radial velocity estimation accuracy is required. The calibration methods based on the sensitivity equations are generally used in the interferometric SAR calibration. However, the performance of these methods is limited by the matrix condition number of the sensitivity matrix, which is decided by the location strategy of Ground Control Points (GCP). This study analyses and simulates the condition number of the sensitivity matrix corresponding to the different GCP distribution ways along the swath as well as the different selections of velocities and positions of moving ground control points.
张慧,洪峻,王宇,李纪传. 机载顺轨干涉合成孔径雷达定标中地面控制点的布设策略研究[J]. 电子与信息学报, 2015, 37(7): 1716-1722.
Zhang Hui, Hong Jun, Wang Yu, Li Ji-chuan. Study on Ground Control Point Locating Strategy for Airborne Along-track Interferometric SAR. JEIT, 2015, 37(7): 1716-1722.
Goldstein R M and Zebker H A. Interferometric radar measurement of ocean surface currents[J]. Nature, 1987, 328: 470-475.
[2]
Romeiser R, Runge H, Suchandt S, et al.. Quality assessment of surface current fields from TerraSAR-X and TanDEM-X along-track interferometry and Doppler centroid analysis[J]. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(5): 2759-2772.
[3]
Lopez D P, Rodriguez C M, Parts P, et al.. Experimental bidirectional SAR ATI acquisitions of the ocean surface with TanDEM-X[C]. 10th European Conference on Synthetic Aperture Radar (EUSAR), Berlin, Germany, 2014: 1-4.
[4]
Goncharenko Y V and Farquharson G. ATI SAR signatures of nearshore ocean breaking waves obtained from field measurements[C]. Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 2013: 326-329.
[5]
Stacy N and Preiss M. Polarimetric ATI slow target detection in a log likelihood framework[C]. Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 2013: 3163-3166.
[6]
Imel D A. AIRSAR along-track interferometry data[R]. 4800 Oak Grove Drive, Pasadena, 2002.
[7]
Mallorqui J J, Bara M, and Broquetas A. Calibration requirements for airborne SAR interferometry[C]. Proceedings of SPIE, SAR Image Analysis, Modeling, and Techniques III, Barcelona, Spain, 2000(4173): 267-278.
[8]
Deng H Z, Goncharenko Y V, and Farquharson G. Phase calibration of an along-track interferometric FMCW SAR[C]. Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, 2013: 1649-1652.
[9]
Hirsch O. Calibration of an airborne along-track interferometric SAR system for accurate measurement of velocities[C]. Proceedings of the IEEE Geoscience and Remote Sensing Symposium (IGARSS), Sydney, Australia, 2001(1): 558-560.
[10]
Zhang W D, Song N, Dong X W, et al.. Airborne SAR- ATI-GMTI data processing[C]. Proceedings of the International Conference on Digital Manufacturing and Automation, Qingdao, China, 2013: 122-125.
[11]
Mallorqui J J, Bara M, and Broquetas A. Sensitivity equations and calibration requirements on airborne interferometry[C]. Proceedings of the IEEE Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, America, 2000(6): 2739-2741.
Wang Yan-ping, Peng Hai-liang, and Yun Ri-sheng. Locating calibrators in airborne InSAR calibration[J]. Journal of Electronics and Information Technology, 2004, 26(1): 89-94.
Wang Xin. Study on baseline calibration method for airborne ATI-SAR[D]. [Master dissertation], Institute of Electronics, Chinese Academy of Sciences, 2012.
[14]
Zhang Y H. Along Track Interferometry Synthetic Aperture Radar (ATI-SAR) techniques for ground moving target detection[R]. Final Technical Report, Hillside Terrace Marcy New York, 2006.
[15]
Moccia A and Rufino G. Spaceborne Along-Track SAR Interferometry: performance analysis and mission scenarios [J]. IEEE Transactions on Aerospace and Electronic Systems, 2001, 37(1): 199-213.
[16]
Zhang H and Hong J. Sensitivity analysis of Along-Track Interferometric Synthetic Aperture Radar (ATI-SAR) in the presence of squint[C]. Proceedings of the IET International Radar Conference, Xi’an, China, 2013: 1-5.
Zou Mou-yan. Deconvolution and Signal Recovery[M]. Beijing: National Defence Industry Press, 2001: 87-88, 224-226.
[18]
Raney R K. Synthetic aperture imaging radar and moving targets [J]. IEEE Transactions on Aerospace and Electronic Systems, 1971, AES-7(3): 499-505.
[19]
Chen C W. Performance assessment of along-track interferometry for detecting ground moving targets[C]. Proceedings of the IEEE Radar Conference, Wyndham, PA, USA, 2004: 99-104.
