A Spaceborne Integrated Communication System Compatible with Microwave, Laser and Quantum Communication

Abstract

The invention discloses a satellite-borne integration communication system compatible with microwave communication, laser communication and quantum communication. The satellite-borne integration communication system comprises an optical antenna (1), a dichroic mirror (2), a quantum communication optical filter (3), a quantum communication collimating and coupling lens (4), a quantum communication module (5), a polarizing optical splitter (6), a laser communication collimating lens (7), an optical amplification module (8), an electro-optical modulation module (9), a polarizer (10), a laser (11), a laser communication optical filter (12), a laser communication coupling lens (13), a laser receiving module (14), a microwave modulation-demodulation module (15), a microwave antenna (16), an electric amplification module (17) and a multiplexer (18). According to the satellite-borne integration communication system disclosed by the invention, the satellite-borne integration communication system is used as a satellite load, the microwave communication, the laser communication and the quantum communication between satellites as well as between a satellite and the earth can be simultaneously realized, the integration level is increased to a large extent, the complexity of the system is effectively reduced, the satellite-borne integration communication system has the advantages of simple structure, small size, light weight, low power consumption, compatibility of three communication systems, and the like, and the satellite-borne integration communication system can be widely applied to various satellite-borne communication fields for military use, civilian use and the like.

Description

technical field [0001] The invention belongs to the communication field and relates to a satellite integrated communication system. Background technique [0002] Satellite communication is one of the main ways of modern communication, and plays an important role in civil, military and aerospace science and technology. Traditional satellite microwave communication frequency band resources are already very tight, but the requirements for satellite communication rate are constantly increasing, and stricter restrictions are put on the volume, weight and power consumption of communication systems, so it is urgent to develop higher frequency bands satellite laser communication technology. At the same time, because satellite quantum communication has the characteristics of absolute confidentiality and security, it has become a hot spot in international research. At present, many countries in the world have begun to develop satellite laser communication systems and satellite quant...

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent with publication number CN102195717A discloses a quantum communication system compatible with laser communication, which can simultaneously carry out satellite-ground laser communication and quantum communication; however, it does not integrate a microwave communication system, and the microwave communication system and the quantum communication system are still independent at this time Design, the integration of the system is not high, the volume, weight and power consumption are relatively large

The Chinese patent with the publication number CN103117803A discloses an integrated system and application method of spaceborne microwave and laser communication links, but it fails to realize quantum communication in function, and does not solve the inheritance and integration of spaceborne systems for quantum communication functions At the same time, in the content of the invention, the laser communication adopts the internal modulation method, which severely limits the modulation rate of the optical signal and the modulation accuracy of the signal, which is not conducive to the high-speed transmission of information; The complexity of the system is high

Therefore, although the above two technical solutions have realized the system integration of a spaceborne communication terminal with two functions, they have not completely solved the shortcomings of the three communication functions and system integration of spaceborne microwave communication, laser communication and quantum communication.

Images