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| A Bundle Adjustment Calibration Method for Airborne InSAR System Based on Weighting of Feature Points |
| Han Song-tao①②; Xiang Mao-sheng① |
| ①The National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China; ②Graduate University of the Chinese Academy of Sciences, Beijing 100039, China |
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Abstract Interferometric parameters calibration of InSAR system can acquire both interferometric phase bias and accurate baseline parameters. Then planimetric and vertical accuracies can be improved much. An approach of interferometric calibration over very large areas is presented in this paper. It acquired corresponding points using feature points extraction and optimal matching, then weighted bundle adjustment is induced to realize calibration of each sub-data simultaneously. The calibration parameters are analyzed. Results using airborne data show robust of the algorithm with respect to different terrain type.
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Received: 30 April 2009
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Corresponding Authors:
Han Song-tao
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2010, Vol. 32 
