Space laser communication forwarding system based on passive optical switch

Abstract

The invention discloses a space laser communication forwarding system based on a passive optical switch. The system consists of a ground optical signal transmitting terminal, a space forwarding system and a ground optical signal receiving terminal. A transmitting end and a receiving end for space optical communications are placed on the ground, and the space forwarding system is carried by an aircraft and only forwards optical signals without processing such as amplification, modulation, demodulation and the like, so that the complexity of a space system is lowered greatly, and the sizes, weights and power consumption of space loads are lowered. Moreover, point-to-point or broadcasting-mode forwarding of the optical signals is realized through an optical switching system. The signals are modulated on the transmitting end, and demodulated on the receiving end, so that ground-space-ground forwarding communications are realized.

Description

technical field [0001] The invention belongs to the field of space optical communication, and more specifically relates to a space laser communication forwarding system based on a passive optical switch. Background technique [0002] Satellite communication can be divided into microwave communication and optical communication. It is the most important means of communication and plays an important role in the military and civilian fields of modern society. With the rapid development of the information age, microwave communication can no longer meet the current growing demand for satellite communication bandwidth and capacity and high-speed communication. In addition, microwave communication cannot meet the needs of specific users for information transmission security. Therefore, it is urgent to seek data Communication technology with high rate and good security. [0003] Compared with microwave communication, satellite laser optical communication with laser as information ca...

AI Technical Summary

Problems solved by technology

However, due to the long network cycle and high cost of satellite communication, there are certain defects in the network communication in the military field. If we use the aircraft to carry the space forwarding system, only the ground signal is optimized in the air, and the optical switch is used. Point-to-point or broadcast data forwarding, which greatly simplifies the space system. Without affecting the above-mentioned advantages of optical communication, it can also greatly reduce costs, speed up the speed of military combat networking, and greatly improve the communication mobility of combat systems.

Images