Selection method of hyperspectral detection channel for crude oil films with different thickness on sea surface

Abstract

The invention discloses a selection method of a hyperspectral detection channel for crude oil films with different thickness on the sea surface. The selection method comprises the following steps: obtaining actually detected spectral reflectivity data of sea water and the crude oil films with the different thickness; preprocessing Hyperion data; performing wave filtration on the actually detected spectral data; calculating the equivalent reflectance of Hyperion data environment noise; and normalizing simulated Hyperion channel data. According to the method, the spectral reflectivity data of the crude oil films with the different thickness on the sea is collected, the spectral response function and the equivalent reflectance of the environment noise of Hyperion sensor data are calculated, and the actually detected spectral data are subjected to wave filtration and normalization, so that the detection channel for the crude oil films with the different thickness on the sea surface is selected by a Hyperion sensor. According to the method, both the actually detected spectral difference and the influence from the environment noise in obtaining of a remote sensing image are taken into account, so that the method is geared to practical situations and relatively accurate in channel selection.

Description

technical field [0001] The invention relates to the technical field of marine environment monitoring, in particular to a method for selecting hyperspectral detection channels of crude oil films with different thicknesses on the sea surface. Background technique [0002] Oil spill at sea is one of the main forms of marine pollution. After the oil spill occurs, relevant information such as its location, type, area and relative thickness are of great concern to the public and the media. In the application of remote sensing for oil spill detection, there are extensive researches and applications on multi-spectral, thermal infrared, and radar at home and abroad. The information is weak, which leads to the phenomenon of "same object with different spectrum, same spectrum with different object" when extracting sea surface oil slick information. With the emergence and development of hyperspectral remote sensing technology, research on hyperspectral remote sensing detection technolo...

AI Technical Summary

Problems solved by technology

However, when using the measured spectrum to select favorable bands and sensors, it is assumed that the environmental noise during the observation process can be ignored, and only the difference between the measured spectra of the water body and the oil film is analyzed, which leads to inaccurate selection results of the oil film detection channel

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