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Method for calculating electromagnetic scattering of oil spilled sea

A calculation method, electromagnetic scattering technology, applied in the direction of calculation, electrical digital data processing, special data processing applications, etc., can solve problems not involved in the dispersion relationship of oil spilled sea surface, etc., to achieve a wide range of applications, accurate calculation, and small amount of calculation Effect

Inactive Publication Date: 2012-09-12
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

However, in this literature, the impact of oil spill on the direction spectrum of the sea surface is ignored, and the dispersion relation of the oil spill sea surface is not involved

Method used

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  • Method for calculating electromagnetic scattering of oil spilled sea
  • Method for calculating electromagnetic scattering of oil spilled sea
  • Method for calculating electromagnetic scattering of oil spilled sea

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Embodiment Construction

[0015] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0016] Such as figure 1 As shown, the calculation method of the electromagnetic scattering of the oil spilled sea surface of the present invention comprises the following steps:

[0017] Step 1: Calculate the JONSWAP spectrum S(ω) of the clean sea surface according to the marine environmental parameters and

[0018] The expression of JONSWAP wave spectrum is In the formula, β = exp [ - ( ω - ω p ) 2 2 δ 2 ω p 2 ] , δ ...

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Abstract

The invention pertains to the technical field of marine microwave remote sensing, and specifically relates to a method for calculating electromagnetic scattering of oil spilled sea. The method for calculating the electromagnetic scattering of the oil spilled sea comprises the following steps: step1, calculating a JONSWAP frequency spectrum of clean sea according to marine environment parameters; step2, calculating a frequency spectrum of the oil spilled sea according to an oil spill inhibition function; step3, calculating a directional spectrum of the oil spilled sea according to a dispersion relation of Marangoni waves and the frequency spectrum of the oil spilled sea; step4, calculating a radar backscattering coefficient of the oil spilled sea by adopting a two-scale method. The method solves the directional spectrum of the oil spilled sea through the dispersion relation of the Marangoni waves and the oil spill inhibition function, and calculates the radar backscattering coefficients of the oil spilled sea by adopting the two-scale approximation method. Compared with the prior art, the method has advantages of wide application range, accurate calculation, and less computation.

Description

technical field [0001] The invention belongs to the technical field of marine microwave remote sensing, and in particular relates to a calculation method for electromagnetic scattering on the oil spill sea surface. Background technique [0002] The ocean contains abundant fishery resources, mineral resources, pharmaceutical resources and oil and gas resources, etc., which are closely related to human economic activities. Marine oil spill pollution has the characteristics of affecting a wide range of sea areas, lasting for a long time, and causing great damage to marine organisms and the ecological environment. [0003] In terms of oil spill monitoring, there are mainly two methods: direct detection and remote sensing detection. Remote sensing detection mainly uses electromagnetic waves to distinguish oil spills from sea surfaces. At present, the commonly used electromagnetic waves include visible light, microwave, infrared, ultraviolet and laser. Synthetic Aperture Radar (...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 杨永红林明张贞凯奚彩萍凌霖
Owner JIANGSU UNIV OF SCI & TECH
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