Wireless optical communication terminal one-to-many bidirectional communication system and implementation method

Abstract

The invention discloses a wireless optical communication terminal one-to-many bidirectional communication system and an implementation method, the system comprises a master terminal and a slave terminal group which are arranged at a distance of not more than 1KM and are not shielded in the middle, the field of view of the master terminal maximally covers a front 120-degree range, all slave terminals in the slave terminal group are located in the field of view of the master terminal, and all the slave terminals are located in the field of view of the slave terminal. A triangular prism rotating mechanism composed of a motor and a triangular prism is arranged in the master terminal, all the slave terminals in the slave terminal group are provided with manual holders which are used for adjusting visual axes and provided with sighting telescopes, and signal light emitting light paths and signal light receiving light paths of the master terminal and all the slave terminals in the slave terminal group can coincide; the transmitting signal light and the receiving signal light of all the slave terminals in the master terminal and the slave terminal group are different in wavelength and do not influence each other. The system is low in cost and high in practicability, the number of the communication terminals can be increased or decreased at will, and the method is high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of terrestrial wireless optical communication, in particular to a wireless optical communication terminal one-to-many two-way communication system and an implementation method. Background technique [0002] Wireless optical communication is a new type of communication technology that uses laser as a carrier to transmit information in free space. Optical communication has the characteristics of high transmission rate and strong confidentiality. In recent years, the technology has developed rapidly and has gradually been applied in engineering. However, at present, wireless optical communication is mainly point-to-point communication, which has great limitations in engineering applications. When multi-point interconnection is required, multiple communication terminals need to be added as relays, which is expensive and has a fixed number of receiving terminals. [0003] At present, the one-to-many wireless opt...

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Problems solved by technology

Chinese patent CN108306684B discloses a two-way free-space laser communication network system with large-scale multi-node simultaneous reception. This system is equivalent to a combination of multiple point-to-point optical communication systems. The system is complicated and the cost is high.

Chinese patent CN112600620A discloses a large-scale one-to-many one-way laser communication device and method. This technical solution can only realize one-way communication, and a turntable is used as a rotating mechanism, which has low efficiency and increases costs.

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