Detecting device for real-time computing facula mass center of field-programmable logic array

Abstract

The invention pertains to the field of photoelectric imaging and tracking technology, and relates to an in-situ programmable logic array detector for calculating in real-time the center-of-mass of a light spot. The detector comprises an image input unit (21), an image output unit (22), a center-of-mass data output unit (25), an in-situ programmable logic array (31), and a in-situ programmable logic array auxiliary device unit (32). The detector can resolute the center-of-mass data of a light spot of an image in several tens ns, makes the bottleneck bandwidth limit of APT system transfers from an image processing device to a photoelectric imaging device, namely, CCD camera or CMOS camera, hence the overall bandwidth of APT system is greatly improved. The calculation speed is improved from 500-2000 images per second with prior DSP built-in image processing system to 3000-10000000 images per second; the size of the equipment is reduced from former 200mm is multiplied by 300mm is multiplied by 30mm swung dash 300mm is multiplied by 500mm is multiplied by 800mm to 150mm is multiplied by 150mm is multiplied by 30mm; and the power consumption is reduced from former 0.8W swung dash 2.0W to 0.5 W; and the quantity of devices is reduced from former 20-30 to 15.

Description

technical field [0001] The invention belongs to the technical field of photoelectric imaging and tracking, and relates to a real-time calculation light spot centroid detection device of a field programmable logic array. Background technique [0002] In the space laser communication system, the beacon lasers of the two communicating parties need to first capture the azimuth of the other party, then accurately align the optical transceiver of the other party, and then use the communication laser to communicate, and keep the precise alignment of the beacon light to the other party during the communication process. allow. This process is called Acquisition, Pointing, Tracking, or APT for short. (Reference: "Research on Key Technology of ATP System for Free Space Optical Communication", author Shao Bing, etc., publication "Piezoelectricity and Acousto-Optics"). [0003] Figure 1 is a schematic diagram of the structure of an APT device. It consists of a rough tracking camera un...

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Problems solved by technology

[0007] In order to overcome the problems of low computing speed, large volume, high power consumption, and large number of devices in the DSP embedded image processing system of the APT device, the present invention provides a detection device for real-time calculation of spot centroids based on field programmable logic arrays

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