Rapid simulation method of repeat-pass spaceborne natural scene SAR complex image data
A technology of natural scenes and simulation methods, which is applied in the field of rapid simulation of SAR complex image data of repeated orbital spaceborne natural scenes, can solve the problems of lack of prior auxiliary data, unfavorable algorithm analysis and verification, and lack, and achieves high simulation accuracy and shortened time. Simulation time, overcoming the effect of slow speed
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[0019] The present invention will be further described in detail below with reference to the drawings and embodiments.
[0020] Such as figure 1 As shown, the main process of the fast simulation method for SAR complex image data of a repetitive orbit satellite-borne natural scene of the present invention includes the following steps:
[0021] The first step is to read in the orbital parameters, SAR satellite parameters, ground natural scene parameters and image parameters, and determine the satellite orbit imaging center position and the corresponding zero-Doppler imaging ground scene center position:
[0022] 1.1. Read the parameter file in .txt format, in which the satellite orbit parameters include anomalous angle distance ω, orbit inclination i, orbit semi-major axis a, ascending node right ascension Ω, orbit eccentricity e and orbit return pipeline radius; SAR Satellite parameters include wavelength λ, bandwidth Bw, sampling rate fs, ideal repetition frequency Prf, pulse width τ...
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