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JOURNAL OF RADARS  2013, Vol. 2 Issue (1): 60-67    DOI: 10.3724/SP.J.1300.2012.20107
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Joint Three-dimensional Location Algorithm for Airborne Interferometric SAR System
Mao Yong-fei Wang Xiao-jie Xiang Mao-sheng
(Beijing Institute of Spacecraft System Engineering, Beijing 100094, China)
(Beijing Institute of System Engineering, Beijing 100101, China)
(National Key Laboratory of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
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Joint three-dimensional location algorithms aim to simultaneously obtain the north, east, and height coordinates of each pixel in several adjacent Interferometric Synthetic Aperture Radar (InSAR) scenes. Joint calibration is a key procedure used to achieve an accurate three-dimensional location. It can ensure the continuity of three-dimensional locations among adjacent scenes, and achieve the location of large areas with few Ground Control Points (GCPs) using Tie Points (TPs). In this paper, a new joint calibration algorithm for airborne interferometric SAR that simultaneously calibrates north, east, and height coordinates is proposed. It employs a weighted optimization method to carry out calibration, and introduces weights to calibration to discriminate GCPs and TPs with different coherences and locations. The experimental results for airborne InSAR data show that the three-dimensional location accuracy obtained using the proposed calibration algorithm is better than that obtained using the traditional method.

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Mao Yong-fei
Wang Xiao-jie
Xiang Mao-sheng
Key wordsSynthetic Aperture Radar (SAR)   Interferometric   Joint    calibration   Three-dimensional location Weighted optimization     
Received: 2012-12-31; Published: 2013-01-28
Cite this article:   
Mao Yong-fei,Wang Xiao-jie,Xiang Mao-sheng. Joint Three-dimensional Location Algorithm for Airborne Interferometric SAR System[J]. JOURNAL OF RADARS, 2013, 2(1): 60-67.
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