A Hyperspectral Remote Sensing Estimation Method for Marine Oil Spill Film Thickness Based on Parameter Lookup Table

Abstract

The invention relates to an ocean spilt oil film thickness hyperspectral remote sensing estimation method based on a parameter lookup table and belongs to the field of ocean environment monitoring research. The method includes the steps of obtaining and pre-processing standard oil film thickness continuous change hyperspectral data by designing a simulation experiment; obtaining and pre-processing ocean spilt oil satellite remote sensing data; resampling a standard oil film spectrum based on a satellite sensor performance index; normalizing spectral reflectivity; building an oil film thickness optical calculating model; building an attenuation parameter lookup table; normalizing the reflectivity of satellite data and conducting mask treatment; inquiring and building an optimal wave band of the satellite data and relevant parameters; and calculating the oil film thickness in the satellite data through the parameter lookup table and the optical model. Compared with a traditional observation means, by means of the ocean spilt oil film thickness hyperspectral remote sensing estimation method, field workload is less, the thickness of the spilt oil film can be quantized, the thickness of an oil film in a spilt oil area can be calculated without entering an ocean spilt oil pollution area, and requirements of ocean split oil emergency monitoring and evaluation can be met.

Description

1. Technical Field [0001] The present invention relates to a hyperspectral remote sensing estimation method of ocean oil spill oil film thickness based on a parameter lookup table, specifically, based on an oil spill simulation experiment (as attached figure 1 Shown), obtain the standard spectral reflectance curve of oil spilled oil film thickness, use an improved oil film thickness estimation model combined with a parameter lookup table constructed based on oil spill simulation experiments to calculate the oil spilled oil film thickness in satellite hyperspectral image data Method (process as attached figure 2 Shown). 2. Background technology [0002] Under the influence of wind, waves, currents and other factors, the oil spill pollution produced in the process of offshore oil exploration, processing, transportation, etc. has produced many adverse effects on sea water, sea surface atmosphere, seabed, coastal zone, etc., and seriously damaged The marine ecological environment ha...

AI Technical Summary

Problems solved by technology

The optical characteristics of marine oil spills have changed significantly with the thickness of the oil spill. At the same time, the influence of seawater background has gradually increased. Therefore, the difficulty of detecting oil slicks on the sea surface has gradually increased, which has become a difficult point in the monitoring of marine oil spill pollution.

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