Polarimetric Sar Interferometry Measurement Algorithm

Polarimetric synthetic aperture radar (SAR) interferometry, which combines SAR polarimetry with SAR interferometry, can improve the measurement precision of interferometric SAR and enhance the ability to explain the scattering mechanisms of targets. So it has become an important direction of SAR application development. In this dissertation, we studied the methods of terrain measurement using polarimetric SAR interferometry, and based on the result of experiment, an improvement was brought forward.Basic principles and methods of SAR interferometry were studied and some problems in it were analyzed, such as signal processing, height measurement errors, coherence of signals, etc.Basic theories of the polarimetric SAR measurement were studied and the models of polarimetric SAR measurement were analyzed.Based on all of above, the theories of polarimetric SAR interferometry were studied. An improvement was brought forward to reduce the coherence loss resulted by confusion of scatting center.In the end, the result of the experiment proved the improvement. And several actual problems was concerned during the experiment.