Electromagnetic scattering calculation method for dynamic sea surface in a storm-surge mixed mode

Abstract

The invention relates to an electromagnetic scattering calculation method for dynamic sea surface in a storm-surge mixed mode. The electromagnetic scattering calculation method includes the following steps: S1, performing linear sea surface geometric modeling from a sea wave spectrum in a storm-surge mixed mode, wherein the sea wave spectrum comprises a main wave system and an auxiliary wave system; S2, performing geometric modeling on sea waves in a storm-surge mixed mode according to a non-linear sharp wave model; S3, calculating an electromagnetic scattering coefficient of the sea surface in a storm-surge mixed mode by a second-order low-slope approximation method; S4, calculating scattering coefficients under different sea conditions according to a sea spectrum model in a storm-surge mixed mode, the non-linear sharp wave model and the second-order low-slope approximation method, and verifying wind wave spectrum based linear sea surface electromagnetic scattering coefficients subjected to second-order low-slope approximation calculation according to a precise numerical algorithm and a multi-order-moment induction method. The electromagnetic scattering calculation method has the advantages of accuracy and effectiveness.

Description

technical field [0001] The invention relates to a calculation method for dynamic sea surface electromagnetic scattering in a wind wave-surge mixed mode. Background technique [0002] With the rapid development of radar technology, the study of electromagnetic scattering characteristics in complex ocean environments has become a key research direction in the field of electromagnetic scattering because of its wide application in the fields of ocean target detection and recognition, environmental monitoring, and ocean remote sensing. The scattered echoes under the interaction between radar waves and the ocean surface can effectively reflect the information of marine environmental factors such as wind speed, wind direction, water depth and wind area above the sea surface, so it has broad application prospects in related military and civilian research fields. [0003] In the process of sea surface electromagnetic scattering research, the selection of electromagnetic scattering ca...

AI Technical Summary

Problems solved by technology

Although some existing numerical calculation methods, such as the method of moments, can effectively deal with the sea surface scattering problem theoretically, and can obtain strict and accurate solutions, they are applied to the practical problem of dealing with the dynamic sea surface such as electric large-scale rough surface scattering. It is often difficult to obtain results within the limited time required by engineering applications due to the huge amount of calculations.

In addition, some existing methods do not take into account the more realistic sea surface types where wind waves and swells coexist

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