Multiple-input multiple-output space light communication system and method

Abstract

A multiple-input multiple-output space light communication system comprises an emission terminal and a receiving terminal connected with the emission terminal. The emission terminal includes an information source module, a beam combiner module and an emission antenna module; the receiving module includes an extra-large array receiving module, an array detector module and a signal processing module; the beam combiner module is configured to perform beam combination of n-way signals outputted by the information source module and output one-way signal light; the emission module is configured to emit the signal light outputted by the beam combiner and transmit the signal light to the receiving terminal in the space long-distance transmission mode; the extra-large array receiving module is configured to receive the n-way signal light emitted by the emission terminal, and each optical lens in the extra-large array receiving module collects the signal light to a detector at the back; the array detector module is configured to perform photovoltaic conversion of the received signal light and output electric signals; and the signal processing module is configured to process and output digital signals.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a multi-transmit and multi-receive space optical communication system and a communication method. Background technique [0002] For space optical communication systems, whether it is the transmission between the three platforms of sea, land and air, between satellites and the earth, or between satellites, optical signals are transmitted over long distances, due to the effects of atmospheric turbulence and beam diffusion. Both seriously restrict the timeliness and stability of the communication system. Existing space optical communication often adopts the method of single-channel transmission and single-channel reception. With the explosive development of the demand for communication capacity expansion, this method can no longer meet the requirements of high-speed data transmission. It is necessary to improve the existing space optical communication syste...

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Problems solved by technology

[0002] For space optical communication systems, whether it is the transmission between the three platforms of sea, land and air, between satellites and the earth, or between satellites, optical signals are transmitted over long distances, due to the effects of atmospheric turbulence and beam diffusion. Both seriously restrict the timeliness and stability of the communication system

Existing space optical communication often adopts the method of single-channel transmission and single-channel reception. With the explosive development of the demand for communication capacity expansion,

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