A common receiving optical path wireless laser communication networking antenna

Abstract

The invention discloses a wireless laser communication network antenna with a common receiving optical path, which is used for free space laser communication network and relates to the technical field of laser communication. The antenna includes a tracking and aiming unit, a laser emitting unit, a common receiving optical unit, and a communication and detection unit; the tracking and aiming unit includes a rough tracking mechanism, a beam shrinker, a vibrating mirror, a beam splitter, an emitting shaping mirror and a condenser; the laser emitting unit includes a laser , an optical switch, a modulator and an optical fiber; the common receiving optical unit includes a rotating parabolic mirror and a main receiving mirror, and the communication and detection unit includes a beam splitter, a narrow-band filter, an energy beam splitter, a receiving mirror, a communication detector, and a receiving mirror and position detectors. The present invention connects a plurality of tracking and aiming units with communication and detection units through a shared optical unit, and flexibly matches the tracking and aiming units with the communication and detection units according to the spatial position and communication wavelength of communication targets, and realizes simultaneous communication with multiple targets.

Description

technical field [0001] The invention relates to a wireless laser communication network antenna with a common receiving optical path, which is used for free space laser communication network and relates to the technical field of laser communication. Background technique [0002] After decades of theoretical research, simulation, key technology research, principle prototype development, ground demonstration and on-orbit test research of multiple links in wireless laser communication, its rate has developed from the Kbps level of the initial demonstration to the current The Gbps level increasingly reflects the advantages of wireless laser communication in high-speed information transmission. But from a practical point of view, wireless laser communication networking has more application prospects and greater research significance. [0003] Aiming at wireless laser communication networking technology, many institutions have carried out relevant research, and some optical antenn...

AI Technical Summary

Problems solved by technology

The above schemes have the capability of point-to-multipoint simultaneous laser communication to a certain extent, but they also have shortcomings. Among them, the multi-point receiving scheme based on the catadioptric optical system has a small field of view, serious stray light, and difficult arrangement of system transceiver devices. and other disadvantages; the optical fiber array coupling and focal plane expansion receiving field of view scheme has the disadvantages of small field of view and difficult to realize APT tracking; the multi-mirror splicing antenna mechanism has the advantages of compact size and convenient adjustment, but the main optical unit is large in size and single The low energy utilization rate of the reflector and poor scalability and other disadvantages; the composite scheme of multiple optical transceivers has a simple structure, but the system is scattered and the integration level is low. The tracking unit must correspond to the communication and detection unit one by one.

Images