Atmospheric impact detection method for satellite-ground two-way high-speed laser communication based on thermal imager

Abstract

The invention relates to a method for detecting the atmospheric influence of satellite-to-ground bidirectional high-speed laser communication based on a thermal imager, belonging to the technical field of atmosphere detection of communication systems. The method disclosed by the invention aims to solve the problem that the judgement reliability of atmospheric cloud layer characteristics is low at night due to the fact that the traditional imaging system used for monitoring the atmospheric cloud layer characteristics is only sensitive to a visible light wave band and not sensitive to an infrared wave band. A thermal imager control unit sends a communication instruction to the thermal imager according to a promised data packet format, such that the thermal imager is controlled to execute the communication instruction and acquire a current atmospheric cloud layer image; when receiving a state inquiry communication instruction, the thermal imager feeds back currently acquired atmospheric cloud layer image data to the thermal imager control unit according to the promised data packet format; the atmospheric cloud layer image acquired by the thermal imager is transmitted to an image processing unit to be subjected to video compression and image processing, such that a current atmospheric cloud layer characteristic image is obtained; and then, detection on the atmospheric cloud layer characteristics is realized. The method disclosed by the invention is used for detecting the atmospheric cloud layer characteristics.

Description

technical field [0001] The invention relates to a thermal imager-based satellite-earth two-way high-speed laser communication atmospheric impact detection method, which belongs to the technical field of atmospheric layer detection of communication systems. Background technique [0002] There are atmospheric gas molecules and atmospheric aerosol particles in the earth's atmosphere, and the laser will interact with these molecules and particles during atmospheric transmission, resulting in effects such as atmospheric absorption, atmospheric scattering, atmospheric turbulent speckle, atmospheric turbulent scintillation, and atmospheric multipath . At the same time, for satellite-ground link communication, various clouds will also seriously attenuate the laser, seriously affecting the performance of the space laser communication system. The table below lists the initial height, cloud thickness, and light attenuation of various cloud layers. [0003] type Bottom he...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the traditional imaging system is used to monitor the characteristics of atmospheric clouds, which is only sensitive to visible light bands, but not sensitive to infrared bands, so that the reliability of judging the characteristics of atmospheric clouds at night is low. Atmospheric influence detection method for satellite-ground two-way high-speed laser communication with thermal imager

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