A fast asynchronous positioning device and method for a large-angle laser target

Abstract

The invention discloses a fast asynchronous positioning device for a large-angle laser target, which includes a servo tracking mechanism, a laser detection group, a beacon laser emission group, a laser cube mirror and a processing circuit group, and the processing circuit group provides the laser detection group with Power supply to realize signal operation processing and control and drive of the servo tracking mechanism; the laser detection group is composed of a detection lens, a filter group and a four-quadrant photodetector; the beacon laser emission group includes a crosshair laser, A transmitting telescope for expanding the laser beam and a collimating mirror for collimating the outgoing laser light; the servo tracking mechanism is composed of an azimuth axis system and a pitch axis system arranged on the azimuth axis system; it also discloses its asynchronous positioning Method; this patent uses cross-line lasers, laser cube mirrors and four-quadrant detectors to realize autonomous, rapid and asynchronous positioning within a large angle range, and has the advantages of high positioning accuracy, wide applicable angle range, compact structure, and low cost.

Description

technical field [0001] The patent of the present invention belongs to the technical field of wireless optical communication, and specifically relates to a communication target autonomous positioning device suitable for mobile platform wireless optical communication equipment, and a fast asynchronous positioning method. Background technique [0002] In the field of wireless optical communication based on point-to-point mobile platforms, due to the small divergence angle of the laser carrier, the location of the communication object is uncertain, and the establishment of the link often requires the help of other means, resulting in the inability to independently establish a link in the optical band. [0003] If beacons are used for positioning, the traditional method is for both parties to perform large-angle fast asynchronous scanning. The main problem is that it is difficult for both parties to shake hands. The scanning speed of both parties must be carefully designed so that...

AI Technical Summary

Problems solved by technology

[0002] In the field of wireless optical communication based on point-to-point mobile platforms, due to the small divergence angle of the laser carrier, the location of the communication object is uncertain, and the establishment of the link often requires the help of other means, resulting in the inability to independently establish a link in the optical band

[0003] If beacons are used for positioning, the traditional method is for both parties to perform large-angle fast asynchronous scanning. The main problem is that it is difficult for both parties to shake hands. The scanning speed of both parties must be carefully designed so that the probability of line-of-sight intersection during scanning is high. hard to do

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