SAR (synthetic aperture radar) geometric correction method for modifying error equivalent RD (range-Doppler) model
A model correction and geometric correction technology, which is applied in the field of synthetic aperture radar (SAR) signal processing and synthetic aperture radar image geometric correction processing, can solve the problems of reduced efficiency of solution, non-convergence of iterations, and low efficiency of solving ill-conditioned equations, etc., to achieve The effect of improving computing efficiency and improving geometric positioning accuracy
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[0029] The present invention will be further described below in conjunction with the accompanying drawings.
[0030] Such as figure 1 As shown, the SAR geometric correction method based on error equivalent RD model correction of the present invention comprises the following steps:
[0031] Step 1: Establish the range-Doppler equation corrected based on the error equivalent RD model, as follows:
[0032] Distance equation: F 1 i ( ΔR , p ) = R near + ΔR + p N i + N i δr - ( X si - x i ...
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