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      Model-based CP Selection Method for Calibration of Airborne InSAR with Sparse GCPs

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          Abstract

          High-precision height acquisition needs to correct the interferometric parameters errors by interferometric calibration for Interferometric Synthetic Aperture Radar (InSAR) system with many Ground Control Points (GCPs). For the situation that some areas probably only have little GCPs or even no GCPs, a new high-precision calibration method for airborne InSAR based on bundle adjustment is needed, in which the Control Points (CP) selection method is a major point which has a crucial influence on the precision of InSAR calibration. A model-based CP selection method for calibration of airborne InSAR with sparse GCPs is proposed in this paper, which adopts the polynomial model fit method to choose CP based on the sensitivity characteristic of inSAR interferometric parameters. A joint calibration is made with the real InSAR data and the results confirm the validity and rationality of the proposed method.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 December 2012
          : 1
          : 4
          : 441-445
          Affiliations
          [1 ] Science and Technology on Microwave Imaging Laboratory, Institute of Electronics, Chinese Academy of Science
          Article
          a00268e7802548678a27265465aec5db
          10.3724/SP.J.1300.2012.20090

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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