Atmospheric phase screen extraction method based on ground-based SAR (synthetic aperture radar) interference
A synthetic aperture radar, atmospheric phase technology, applied in the field of surveying, can solve the problems of noise impact, complex data processing process, atmospheric disturbance system, etc.
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[0045] The present invention will be further described below in conjunction with the accompanying drawings of the specification.
[0046] The atmospheric phase screen extraction method based on ground-based synthetic aperture radar interference of the present invention extracts the atmospheric phase based on the ground-based radar differential interference phase model, the least squares method fitting linear deformation and the spatio-temporal filtering method, and the interference phase model fully considers the ground-based radar imaging mechanism And the principle of differential interference to extract the atmospheric phase screen. The present invention proposes a three-level PS point selection method for amplitude dispersion index, coherence index and phase stability. Finally, the atmospheric phase screen of each scene radar data is obtained by Kriging interpolation to accurately extract the received The phase generated by atmospheric influence plays an important role in impr...
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