Method and system for identifying marine oil spill object by marine radar

A technology of marine radar and marine oil spill, which is applied in the direction of using re-radiation, radio wave measurement system, radio wave reflection/re-radiation, etc., to achieve the effect of small calculation and easy extraction

Active Publication Date: 2010-12-15
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

Known marine radars are used to detect "big targets" such as navigation avoidance on the sea surface, determination of ship positioning, piloting in narrow waterways, etc., but a system for identifying oil spill targets on the sea surface using marine radars has not yet been developed.

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  • Method and system for identifying marine oil spill object by marine radar
  • Method and system for identifying marine oil spill object by marine radar
  • Method and system for identifying marine oil spill object by marine radar

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Embodiment Construction

[0031] The known nautical radar is used for sea navigation avoidance, ship positioning, narrow waterway piloting, and other "big target" detection. The present invention uses the extraction of clutter information such as waves, which are discarded by the known marine radar, and can be monitored with high-resolution radar. And identify small targets within 8 nautical miles, especially for the identification of marine oil spill targets. Using the texture-based algorithm to identify oil spill targets has a small amount of calculation, is simple, and can better extract oil spill targets at sea.

[0032] like figure 2 The method for identifying oil spill targets at sea by using marine radar as shown, specifically includes the following steps:

[0033] A. Convert the output image signal from radar projection to Cartesian projection; since the original data obtained from the radar is the radar echo intensity image in polar coordinates, it is necessary to convert the image to facili...

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Abstract

The invention discloses a method and system for identifying a marine oil spill object by a marine radar. The method of the invention comprises the following steps: A, converting output image signals from radar projection into Descartes projection; B, correcting images and compensating motion; C, processing the radar images corrected in the step B by a Gamma filtering method, reserving marginal information and simultaneously filtering high-frequency noise of the radar images; D, detecting a strong signal area in the images, according to the distribution of signal strength in the images, determining the saturated state strength as the strength threshold of the signal area, and directly deleting the signal data exceeding the strength threshold; and E, carrying out image segmentation by a gray level co-occurrence matrix method to abstract the marine oil spill object. The system comprises a radar main controller, a marine radar controller, a junction box, an acquisition device, a processing device and a display device. The invention utilizes the noise wave information such as ocean wave and the like to obtain a small object, identifies the oil spill object by a texture algorithm, and can better abstract the marine oil spill object.

Description

technical field [0001] The invention relates to a method and system for identifying marine oil spill targets by using marine radar. Background technique [0002] The research on marine oil spill monitoring technology is attracting more and more researchers' attention. People are working to find a faster and more accurate monitoring technology, as well as an effective emergency response mechanism. Remote sensing monitoring technology with satellite and airborne sensors as the main means has been widely used in this field. However, the characteristics of these traditional means have made it impossible to realize continuous monitoring of oil spill accidents in adverse weather conditions. [0003] Ocean surface roughness depends on sea surface winds, waves, oil spill pollutants and even seafloor topology. Oil spills produce relatively low radar returns, appearing as darker areas on radar images, which has been confirmed by spaceborne and aircraft-borne radars. Known marine r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S13/89
Inventor 李颖于水明陈澎
Owner DALIAN MARITIME UNIVERSITY
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