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| 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) |
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Abstract 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.
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Received: 17 September 2014
Published: 02 June 2015
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Corresponding Authors:
Zhang Hui
E-mail: 123happy.zh@163.com
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| [1] |
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.
|
| [12] |
王彦平, 彭海良, 云日升. 机载干涉合成孔径雷达定标中的定标器布放[J]. 电子与信息学报, 2004, 26(1): 89-94.
|
|
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.
|
| [13] |
王欣. 机载ATI-SAR基线定标方法研究[D]. [硕士论文], 中国科学院电子学研究所, 2012.
|
|
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.
|
| [17] |
邹谋炎. 反卷积和信号复原[M]. 北京: 国防工业出版社, 2001: 87-88, 224-226.
|
|
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.
|
|
|
|
