Large-range one-to-many one-way laser communication device and large-range one-to-many one-way laser communication method

Abstract

The invention belongs to the technical field of laser communication, and particularly discloses a large-range one-to-many one-way laser communication device and a large-range one-to-many one-way lasercommunication method. The device comprises a transmitting end and a receiving end, and the transmitting end is used for converting received data information into a modulated electric signal to modulate laser and transmitting the laser to a specified communication area in a set period; and the plurality of receiving ends are arranged in a specified communication area and are used for receiving thelaser, converting the laser into an electric signal and demodulating the electric signal according to the modulation rule to output data information. The method comprises the following steps of: enabling a transmitting end to convert data information into a modulated electric signal to modulate laser, and transmits the laser to a specified communication area in a set period; and arranging a plurality of receiving ends in a specified communication area, receiving the laser by the receiving ends, converting the laser into an electric signal, and demodulating the electric signal according to themodulation rule to output data information. According to the invention, large-range one-to-many one-way laser communication can be realized, the receiving end can be added and moved at will, and thecost is low.

Description

technical field [0001] The invention belongs to the technical field of free space laser communication, and more specifically relates to a large-scale one-to-many one-way laser communication device and method. Background technique [0002] Free space optical communication is a communication technology that uses laser as a carrier to transmit information in the atmosphere or vacuum. Because laser has good directivity and does not occupy radio frequency resources for communication, these two outstanding advantages are widely used in point-to-point communication. At present, this technology is mainly used in scenarios such as between satellites and ground stations, between two fixed locations on the ground, or between drones and ground stations, to achieve point-to-point communication. When there are multiple receiving terminals, it is necessary to re-target and establish links one by one to realize communication with multiple terminals. However, with the development of the In...

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a large-scale one-to-many one-way laser communication device and method, in which a large-scale Scope one-to-many one-way laser communication device and method, and research and design its key components such as the structure of the transmitting end and receiving end and their specific setting methods, and correspondingly realize one-to-many one-way laser communication in a wide range, At the same time, the transmitting end can be superimposed, and the receiving end can be adaptively adjusted according to needs, which can effectively solve the problems of complex systems and high costs in the prior art, and at the same time expand the number of one-to-many communications, and the number of receiving ends will not be affected. The transmitter can be increased arbitrarily, and the receiver can be moved arbitrarily within the area covered by the laser. It has the characteristics of low cost and strong adaptability.

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