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Ocean oil spill detection laser radar

A technology for detecting lasers and oil spills, applied in radio wave measurement systems, instruments, etc., can solve problems such as lidar products that have not been reported in detail, and achieve the effect of fast scanning, fast scanning speed, and improved horizontal resolution

Active Publication Date: 2019-02-01
BEIJING RES INST OF TELEMETRY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Although the main domestic marine lidar development units have carried out exploration and research on lidar ocean detection technology for a long time, such as Shanghai Institute of Optics and Mechanics, Ocean University of China, etc., the marine oil spill detection lidar products currently available in the literature No specific report yet

Method used

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  • Ocean oil spill detection laser radar

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Embodiment

[0049] The principle of the present invention is: when the marine oil spill detection laser radar is working, the laser emitting unit emits dual-wavelength lasers on the water surface with a visible band of 532nm and a near-infrared band of 1064nm, and the Cassegrain telescope receives the light signal scattered by the target, and the light signal enters the optical receiver. After processing the channel, perform color separation, polarization splitting, narrow-band filtering, etc., and divide the echo signal into underwater targets, 532nm parallel to the water surface, 532nm vertical, and 590nm oil fluorescence, and determine the Raman scattering channel of the measured target component and 647nm water , 1064nm these 5 channels, through the photoelectric conversion, acquisition, analysis, inversion and storage of the multiple channel lidar echo signals, the lidar signal target detection is realized, such as figure 1 shown.

[0050] A marine oil spill detection lidar, which is...

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Abstract

The invention discloses an ocean oil spill detection laser radar system, which uses good transmission characteristics of laser wavebands in seawater to detect underwater submerged oil and perform high-precision detection on targets such as green tide, sea ice, seabed and the like. According to the system, 532 nm and 1064 nm dual-wavelength high-repetition-frequency laser emission is used for carrying out optical active detection on underwater and overwater targets; two-dimensional scanning of laser radar targets is realized by utilizing an optical scanning system, thereby acquiring three-dimensional positions of the targets; in a laser transceiving coaxial design form, the implementation difficulty of the optical scanning system is lowered; a large-caliber, large-view-field and multi-channel optical receiving system is adopted for enhancing the detection capability of underwater relatively weak targets; a signal processing system with a high sampling frequency is adopted for realizingthe target distance detection of the sub-meter precision; a polarization detection channel is adopted for measuring a target surface depolarization coefficient, so that target distinguishing is facilitated; and a laser radar is provided with an airborne mounting device and a shipborne mounting device, so that the use requirements of different carrying platforms can be met.

Description

technical field [0001] The invention relates to a marine oil spill detection laser radar, which belongs to the technical field of marine target measurement. Background technique [0002] The detection of underwater oil spill targets is one of the important target information to be obtained in marine research, and plays an important role in national economic construction, protection of marine rights and interests, national defense construction and scientific research. At present, people's research on the law of underwater oil spills and the level of control are relatively low. The main reason is the lack of rapid and effective detection methods for underwater oil spills, especially the distribution information of underwater oil spills in shallow sea areas within 30m. [0003] In the 1960s, the United States, Canada, Australia and other countries successively developed and tested the first-generation laser water depth measurement system. Except for the AOL system in the Unite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/483G01S7/484G01S7/486
CPCG01S7/483G01S7/484G01S7/486
Inventor 王钰张玉石赵一鸣韩晓爽刘宇哲
Owner BEIJING RES INST OF TELEMETRY
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