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Image tracking system and image tracking algorithm for double-cylinder multi-FOV (field of view) sun photometer

A sun photometer and image tracking technology, which is applied in the field of sun tracking, can solve the problem of inconvenient measurement of the sun tracking system and achieve high tracking accuracy

Active Publication Date: 2012-10-10
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a binocular multi-field heliometer image tracking system and algorithm to solve the problem of inconvenient measurement and limitations of the sun tracking system in the prior art heliophotometer

Method used

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  • Image tracking system and image tracking algorithm for double-cylinder multi-FOV (field of view) sun photometer
  • Image tracking system and image tracking algorithm for double-cylinder multi-FOV (field of view) sun photometer
  • Image tracking system and image tracking algorithm for double-cylinder multi-FOV (field of view) sun photometer

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Embodiment Construction

[0038] Such as figure 1 , figure 2 , image 3 shown. Binocular multi-field sun photometer image tracking system, including imaging light tube 16, CCD image sensor 3, image acquisition module 11, motion control module 12, industrial computer 13, turntable 1, imaging light tube 16 is located on turntable 1 detector The front end of the box 25, the inner wall is painted black, the front end has a hole and is embedded with an attenuation filter 14, and the inside contains a doublet lens 15 composed of glued positive and negative lenses, and the rear end has a hole and has an external thread. The CCD image sensor 3 is located on the turntable 1 In the middle end of the detector box 25, there is a blackened and internally threaded lens ring 4 at 5 places on the front CCD target surface, which is connected with the imaging light tube 16 thread pair, and the back includes a power socket 6 and a BNC image output plug 7, and the power supply The socket 6 is connected to the power co...

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Abstract

The invention discloses an image tracking system and an image tracking algorithm for a double-cylinder multi-FOV (field of view) sun photometer. The image tracking system for the double-cylinder multi-FOV sun photometer comprises an image forming photic cylinder, a CCD (charged coupled device) image sensor, an image capturing module, a movement control module, an industrial personal computer, and a rotary table. The movement control module is controlled by the industrial personal computer to enable the rotary table to correctly return to an initial position in two degrees of freedom in horizontal and elevated directions. After a broad-tracking command is issued by a user via the industrial personal computer, the rotary table is controlled by the movement control module to enable the image forming photic cylinder to align to the sun, parallel sunlight forms an image on a target surface of the CCD via the image forming photic cylinder, the image capturing module is commanded, by the industrial personal computer via a procedure, to capture a sun image output by the CCD image sensor and transmits the sun image to the industrial personal computer, then an accurate-tracking command is issued by the industrial personal computer so that the movement control module can control the rotary table to accurately track the sun, and the tracking accuracy is higher than one arc-second. By the aid of the image tracking system and the image tracking algorithm for the double-cylinder multi-FOV sun photometer, the limitation problem that a conventional sun photometer, in the presence of uneven clouds, cannot accurately track the sun by utilizing distribution of four-quadrant light intensity is solved.

Description

technical field [0001] The invention relates to the technical field of sun tracking of a solar direct radiation intensity measuring instrument in atmospheric science, in particular to an image tracking system and an algorithm of a binocular multi-field sun photometer. Background technique [0002] In atmospheric science, the optical properties of atmospheric aerosols and cirrus clouds can be obtained by measuring the intensity of direct solar radiation in a narrow field of view and narrow band. Important position, affects the energy balance in the atmosphere and the detection of space targets in the atmosphere through direct and indirect effects, the traditional monocular single-field sunphotometer is widely used in the measurement of aerosol optical properties, and its measurement applications depend heavily on In cloudless weather conditions, the binocular multi-field solar photometer recently developed by Anhui Institute of Optics and Mechanics can not only measure the op...

Claims

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Application Information

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IPC IPC(8): G05D3/12G01J1/42G01J1/04
Inventor 李建玉李多扬黄宏华魏合理江庆五
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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