Ocean spilt oil film thickness hyperspectral remote sensing estimation method based on parameter lookup table

A technology of hyperspectral remote sensing and oil film thickness, which is applied in the field of hyperspectral remote sensing estimation of marine oil film thickness based on parameter lookup tables, can solve the problems of increased difficulty in sea surface oil film detection, improve real-time monitoring efficiency and ensure monitoring accuracy , the effect of improving the accuracy

Inactive Publication Date: 2013-03-27
NANJING UNIV
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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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  • Ocean spilt oil film thickness hyperspectral remote sensing estimation method based on parameter lookup table
  • Ocean spilt oil film thickness hyperspectral remote sensing estimation method based on parameter lookup table
  • Ocean spilt oil film thickness hyperspectral remote sensing estimation method based on parameter lookup table

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Embodiment Construction

[0032] The present invention is further explained by example below:

[0033] Taking a typical oil spill pollution monitoring in Liaodong Bay, China in 2007 as an example, after the oil spill occurred, seawater and oil samples were obtained from the area where the oil spill occurred. Using the ASD ground object spectrometer (the specific parameters are shown in Table 1), using two 50-watt halogen lamps as the incident light source, the incident light angle is similar to the sun altitude angle at 10 am, and different oil film thicknesses under the seawater background are obtained in the laboratory The hyperspectral reflectance data (such as figure 1 ), the spectral range of the data is 350-2500nm, the spectral resolution is 1nm, and the visible light band 380-760nm is selected as the original data (such as image 3 ).

[0034] Table 1 Technical parameters of ASD spectrometer

[0035]

[0036] The Hyperion hyperspectral image of the American EO-1 satellite of the oil spill ...

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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 invention relates to a hyperspectral remote sensing method for estimating the thickness of an ocean oil spill oil film based on a parameter look-up table, specifically, based on an oil spill simulation experiment (as attached figure 1 As shown), the standard spectral reflectance curve of the oil spill film thickness change is obtained, and an improved oil film thickness estimation model combined with a parameter lookup table constructed based on the oil spill simulation experiment is used to calculate the oil spill film thickness in the satellite hyperspectral image data method (the process is attached figure 2 shown). 2. Background technology [0002] Under the influence of factors such as wind, waves, and currents, the oil spill pollution produced in the process of offshore oil exploitation, processing, and transportation has many adverse effects on seawater, sea surface atmosphere, seabed, and coastal zones, etc., seriously damaging the ma...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06
Inventor 陆应诚李想
Owner NANJING UNIV
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