Journal of Systems Engineering and Electronics

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Temporal decorrelation model for the bistatic SAR interferometry

Qilei Zhang* and Wenge Chang   

  1. College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Online:2015-02-13 Published:2010-01-03


This paper develops a temporal decorrelation model for the bistatic synthetic aperture radar (BSAR) interferometry. The temporal baseline is one of the important decorrelation sources for the repeat-pass synthetic aperture radar (SAR) interferometry. The study of temporal decorrelation is challenging, especially for the bistatic configuration, since temporal decorrelation is related to the data acquisition geometry. To develop an appropriate theoretical model for BSAR interferometry, the existing models for monostatic SAR cases are extended, and the general BSAR geometry configuration is involved in the derivation. Therefore, the developed temporal decorrelation model can be seen as a general model. The validity of the theoretical model is supported by Monte Carlo simulations. Furthermore, the impacts of the system parameters and BSAR geometry configurations on the temporal decorrelation model are discussed briefly.

Key words: temporal decorrelation, bistatic synthetic aperture radar (BSAR), interferometry, geometry configuration