Wave truncated wavelength compensation method based on multi-view SAR wave spectrum data fusion

Abstract

A wave cutoff wavelength compensation method for Multiview SAR wave spectrum data fusion, comprising: performing a Multiview SAR wave synchronous data simulation to acquire Multiview SAR wave synchronous data; using an MPI algorithm in the inversion of individual satellite SAR wave synchronous data on the basis of the Multiview SAR wave synchronous data to obtain an optical wave spectrum for the individual satellite SAR wave synchronous data, estimating a cutoff wavelength for the individual satellite SAR wave synchronous data; determining an optimal wave spectrum fusion weight for the individual satellite SAR wave synchronous data on the basis of relations between azimuths and cutoff wavelengths, performing, on the basis of the optimal wave spectrum fusion weight for the individual satellite SAR wave synchronous data, data fusion with respect to the optimal wave spectrum obtained by inversion, when fused, obtaining a multiple satellite-fused optimal wave spectrum, and respectively estimating, on the basis of the multiple satellite-fused optimal wave spectrum, cutoff wavelengths corresponding to pre-fusion optimal spectra, thus implementing cutoff wave compensation.

Description

technical field [0001] The present disclosure relates to the technical field of ocean wave observation, in particular to a wave truncated wavelength compensation method for fusion of multi-view SAR ocean wave spectrum data, SAR, Synthetic Aperture Radar, synthetic aperture radar. Background technique [0002] The statements in this section merely mention background art related to the present disclosure and do not necessarily constitute prior art. [0003] Ocean waves are small-scale wind-induced gravity waves that occur on the ocean surface, including wind waves and swells, and are also an important ocean dynamic process. Studying the generation and evolution mechanism of ocean waves and revealing their internal structure and external characteristics has become an important research field in oceanography, which is of great significance to the construction of national defense, shipping, ports and offshore oil platforms. Common methods to obtain ocean wave information mainly ...

AI Technical Summary

Problems solved by technology

Although this method avoids the calculation of complex original SAR data, it cannot fully reflect the characteristics of the SAR system, especially in the process of generating sea echo signals. Physical mechanism in line with the real sea surface

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