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GNSS-R shore-base sea surface oil spill remote-sensing detection method

A sea surface oil spill and detection method technology, applied in the direction of electric/magnetic area measurement, measuring device, electromagnetic measuring device, etc., can solve the problems of poor mobility, high cost of equipment, and can only monitor specific sea areas, etc., to achieve flexible simulation Effect

Inactive Publication Date: 2019-11-12
金华航大北斗应用技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the existing methods that need to be improved. For example, the limitation of the detection range of the equipment makes it only able to monitor small areas of oil spill pollution, and its popularization is also limited by the high cost of equipment.
[0005] Patent No.: CN105137427A discloses a rapid monitoring method for oil spills on the sea surface, which can accurately monitor oil spills in real time, but its network chart radar antenna and hydrometeorological sensors are installed on shore monitoring platforms or gathering platforms, which can only In a specific sea area, there is nothing to do about oil spills in other sea areas, poor maneuverability, and it is impossible to trace the cause of the oil spill and the ship

Method used

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  • GNSS-R shore-base sea surface oil spill remote-sensing detection method
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  • GNSS-R shore-base sea surface oil spill remote-sensing detection method

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Experimental program
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Effect test

Embodiment 1

[0024] like Figure 1 to Figure 3 As shown, a GNSS-R shore-based sea oil spill remote sensing detection method includes the following steps:

[0025] (1) Receiving signals: Receive the direct and reflected signals in the detection equipment through GNSS-R technology;

[0026] (2) Calculation of signal reflectivity polarization ratio: for received direct and reflected signals, the calculation method of signal power value and reflectivity is used. The relationship between reflectivity and power value is as follows, where Γ represents reflectivity, Indicates the power value:

[0027]

[0028] According to the above formula, the left-handed reflectivity Γ is obtained by comparing the power with the direct signal rl and dextrorotatory reflectance Γ rr The ratio, put into the above formula, we get:

[0029]

[0030] Among them, θ refers to the satellite elevation angle; χ(v z ) represents the characteristic function of the scattering coefficient and the rough surface hei...

Embodiment 2

[0036] A GNSS-R shore-based sea oil spill remote sensing detection method, comprising the steps of:

[0037] (1) Receiving signals: Receive the direct and reflected signals in the detection equipment through GNSS-R technology;

[0038] (2) Calculation of signal reflectivity polarization ratio: for received direct and reflected signals, the calculation method of signal power value and reflectivity is used. The relationship between reflectivity and power value is as follows, where Γ represents reflectivity, Indicates the power value:

[0039]

[0040] According to the above formula, the left-handed reflectivity Γ is obtained by comparing the power with the direct signal rl and dextrorotatory reflectance Γ rr The ratio, put into the above formula, we get:

[0041]

[0042] Among them, θ is the satellite elevation angle; χ(v z ) represents the characteristic function of the scattering coefficient and the height Z of the rough surface after the electromagnetic wave is sc...

Embodiment 3

[0049] A GNSS-R shore-based sea oil spill remote sensing detection method, comprising the steps of:

[0050] (1) Receiving signals: Receive the direct and reflected signals in the detection equipment through GNSS-R technology;

[0051] (2) Calculation of signal reflectivity polarization ratio: for received direct and reflected signals, the calculation method of signal power value and reflectivity is used. The relationship between reflectivity and power value is as follows, where Γ represents reflectivity, Indicates the power value:

[0052]

[0053] According to the above formula, the left-handed reflectivity Γ is obtained by comparing the power with the direct signal rl and dextrorotatory reflectance Γ rr The ratio, put into the above formula, we get:

[0054]

[0055] Among them, θ is the satellite elevation angle; χ(v z ) represents the characteristic function of the scattering coefficient and the height Z of the rough surface after the electromagnetic wave is sc...

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Abstract

The invention relates to the field of sea surface oil spill detection technology, and discloses a GNSS-R shore-base sea surface oil spill remote-sensing detection method. The method comprises the following steps: (1) receiving signals, wherein direct and reflected signals in detection equipment are received through GNSS-R technology; (2) calculating a signal reflectivity polarization ratio: and (3) judging a sea surface oil spill situation, wherein the polarization ratio obtained in the step (2) is compared with a theoretical value, a sea surface oil spill exists if the same is greater than the theoretical value, and no sea surface oil spill exists if the same is less than the theoretical value. In the method, limited coverage ranges (blazed zones) of receivable reflected signals of an antenna at different times are calculated according to obtained orbital parameters of a navigation satellite, a position of a platform and erection height data of the antenna, calculation simulation is carried out on blazed zones of a period of time, and flexible simulation can be carried out for blazed zone coverage situations of the satellite at the different times.

Description

technical field [0001] The invention relates to the technical field of sea surface oil spill detection, in particular to a GNSS-R shore-based sea surface oil spill remote sensing detection method. Background technique [0002] Marine oil spill is one of the main factors that cause marine environmental pollution damage. Among various marine pollution, oil pollution ranks first in terms of frequency of occurrence, distribution breadth, and degree of harm. Marine oil spills are caused by accidents. , Such as ship collision, ship capsizing, rupture of offshore oil wells and oil pipelines, leakage of subsea oilfields, etc. With the development of the world's marine transportation industry and the continuous production of offshore oil fields, oil spill accidents continue to increase, often causing oil pollution on a large area of ​​the sea, not only damaging the ocean, the natural environment of the atmosphere, and ecological resources, but also causing a large number of deaths of...

Claims

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Application Information

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IPC IPC(8): G01B7/32G01S19/42G01S19/13
CPCG01B7/32G01S19/13G01S19/42
Inventor 不公告发明人
Owner 金华航大北斗应用技术有限公司
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