Laser aiming device in free space optical communication system

Abstract

A laser aimer of free special optical communication system comprises of modulation beacon light source, receiving optical wire antenna, position sensor, signal processor, interface circuit and computer. The laser beam is generated in the light source on one end of communication link formed of a pair of free special optical communication system, then it irradiates on another end of another free special optical communication system; facula which contains information of the relative position and special angle of the two ends of the system is formed by the system comprising of narrow band filter and imaging lens receiving optical antenna which focuses on the position sensor and photosurface ; the power of facula is changed into electric signal by position sensor and is entered into the electric signal processor to be reprocessed, passed to the computer which will calculate the accurate position and special angle of the two ends. The invention has simple structure, small volume and light weight, high accuracy and fast speed.

Description

[0001] technical field [0002] The invention relates to a tracking and aiming device using laser light. In particular, it relates to a mutual alignment and tracking device for laser transceiver systems at two ends of free space laser communication (Free Space Optical, FSO) or wireless optical communication (Wireless Optical Communication, WOC). Background technique [0003] At present, there are many methods for aiming and position calibration of the transceiver system at both ends of free space optical communication or wireless optical communication, such as the blocking telescope for shooting, but its field of view and aiming distance are limited, and it cannot be operated automatically , need to use manual. Using four-quadrant photoelectric devices to track, there is a blind spot at the center point, and the error is large. Using a linear array CCD camera requires a huge and complex optical scanning mechanism. The quality and spatial orientation of the cooperative targe...

AI Technical Summary

Problems solved by technology

Using a linear array CCD camera requires a huge and complex optical scanning mechanism

Calculate the quality and spatial orientation of the cooperative target through the imaging position of the diagonal reflector of the area array CCD camera within the field of view of the CCD camera, and the number of pixels of the CCD camera limits the resolution of the measurement

The computer has a large amount of information processing and slow measurement speed, which cannot meet the requirements of rapid alignment and adjustment at both ends of the communication chain of the free space optical communication system to ensure communication quality

Large volume and weight, inconvenient to use

[0004] At present, there are no domestic reports, articles or patents on the application of a laser sight composed of a position sensor to both ends of a communication chain composed of a free-space optical communication system.

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