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      Data Based Parameter Estimation Method for Circular-scanning SAR Imaging

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          Abstract

          The circular-scanning Synthetic Aperture Radar (SAR) is a novel working mode and its image quality is closely related to the accuracy of the imaging parameters, especially considering the inaccuracy of the real speed of the motion. According to the characteristics of the circular-scanning mode, a new data based method for estimating the velocities of the radar platform and the scanning-angle of the radar antenna is proposed in this paper. By referring to the basic conception of the Doppler navigation technique, the mathematic model and formulations for the parameter estimation are firstly improved. The optimal parameter approximation based on the least square criterion is then realized in solving those equations derived from the data processing. The simulation results verified the validity of the proposed scheme.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 June 2013
          : 2
          : 2
          : 203-209
          Affiliations
          [1 ] College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics
          [2 ] Shanghai Institute of Satellite Engineering
          Article
          4989abf020b349c7bac58080a0af40fc
          10.3724/SP.J.1300.2013.20073

          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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