Portable laser communication device and usage method thereof

Abstract

The invention discloses a portable laser communication device and a usage method thereof. The device comprises a signal light emitting module, a signal light receiving module, an alignment module anda status indication module, the signal light emitting module is used for receiving a signal of an external device and modulating the signal into signal light and outputting the signal light, the signal light receiving module is used for receiving the external signal light and outputting the demodulated signal light to the external equipment, the alignment module includes a manual alignment unit and an automatic alignment unit, The manual alignment unit is used for outputting a reference laser beam coaxial with the signal light when the signal light emitting module outputs the signal light, andthe automatic alignment unit is used for rotationally capturing the external signal light and assisting the signal light receiving module to receive the external signal light. The laser communicationdevice and the use method thereof provide by the invention solve the problems of long alignment time of the traditional manual alignment short-range laser communication system and difficulty in realizing high-speed laser communication.

Description

technical field [0001] The invention relates to the field of space laser communication, in particular to a portable laser communication device and a method for using the same. Background technique [0002] The high-precision tracking and aiming system is widely used in high-speed laser communication systems and is an important part of high-speed laser communication systems. At present, the mechanical structure and realization principle of the traditional tracking system itself are relatively complex, usually including servo mechanism, position detection optical path and related components such as CCD camera or four-quadrant detector. The cost of position detection and aiming through such methods is high, which is not conducive to the application in low-cost and miniaturized short-range laser communication systems; on the other hand, short-range laser communication systems that use manual aiming are usually designed to be larger The laser divergence angle and receiving field...

AI Technical Summary

Problems solved by technology

[0003] In view of the defects existing in the prior art, the object of the present invention is to provide a portable laser communication device and its use method, which solves the problem of low communication rate, long alignment time and difficulty in realizing high-speed laser communication in traditional manual alignment of short-distance laser communication. communication problem

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