Panoramic photoelectric radar and scanning method utilizing ground object image positioning

Abstract

The invention provides a panoramic photoelectric radar which comprises a rotary table which employs a light backflow ring and is capable of rotating 360 degrees continuously, two cameras and a computer matched with the two cameras. A horizontal camera is installed at a horizontal direction of the rotary table, a pitching support of the rotary table is provided with a pitching camera, and the computer is connected with the rotary table and the cameras. The horizontal camera rotates with rotation of the rotary table, and a pitch angle of the horizontal camera is unchanged and is always aimed ata ground object. The pitching camera scans different air areas with change of a pitch angle of the rotary table, and a pitching scanning amplitude is 0 to 90 degrees. The horizontal camera is coaxialwith to a vertical direction of the pitching camera. According to the panoramic photoelectric radar, by utilizing a ground object, employing a double site scanning method, omnidirectional scanning with a 0-360 degrees horizontal angle and a 0-90 degrees pitching angle is realized. By utilizing a method of image processing, an air object is identified automatically, by utilizing a method of image coupling, an accurate azimuth angle and distance of a known ground object reference point are notified, accurate positioning and range finding are carried out on an air object, and an image, a motion parameter and a locus of the air object are accurately displayed.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to a photoelectric radar using dual-station rotary scanning. Background technique [0002] Photoelectric radar does not actively emit radar waves, it is a kind of [0003] A device that realizes the radar function by means of dynamic photoelectric detection. Due to the emergence of stealth aircraft, the importance of photoelectric radar has been paid more and more attention. However, there are few reports of photoelectric radars that can truly have the same functions as conventional radio wave-emitting radars in automatic target recognition and long-distance ranging. The reason is that photoelectric radars have technical difficulties in target scanning, automatic target recognition and ranging. . [0004] There are two existing optical radar scanning methods: one is the staring type, and its advantage is that it is easy to find moving targets, whether they are gro...

AI Technical Summary

Problems solved by technology

Use the target image information obtained by the photoelectric camera to calculate the target position parameters to obtain the distance parameters of the detection target. This method all depends on the mechanical accuracy of the turntable, and the distance and other parameters measured for long-distance air targets have large errors.

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