Optical intelligent antenna for rapidly moving free space optical communication system

Abstract

The invention discloses an optical intelligent antenna for rapidly moving a free space optical communication system, aiming to mainly solve the problems of capturing, aligning and tracking a communication target in the conventional free space optical communication system which is moved rapidly point-to-point. The optical intelligent antenna comprises a semi-spherical or spherical bottom plate (1), wherein laser receiving / sending arrays are arranged on the semi-spherical or spherical bottom plate (1); each laser receiving array (5) and each laser sending array (4) are arranged fully on the whole spherical or semi-spherical bottom plate every row to form the laser receiving / sending arrays with a honeycomb structure; and each laser receiving / sending array corresponds to a group of internal structure units which are embedded in a cavity body of the spherical or semi-spherical bottom plate so as to correspondingly adjust optical wave beams through a device in the structure units under the condition of space division time multiplexing and angle multiplexing. The optical intelligent antenna increases the communication coverage area, can automatically control the optical wave beams of a transmitting unit rapidly and in real time according to the movement of the communication target, and can be used in the field of wireless laser communication.

Description

technical field [0001] The invention belongs to the technical field of wireless laser communication, and relates to a communication antenna, in particular to an optical smart antenna suitable for a fast-moving free-space optical communication FSO system. Background technique [0002] As a new type of broadband wireless communication technology, the fast-moving free-space optical communication FSO system has attracted much attention due to its many unparalleled advantages. Compared with optical fiber communication, it does not need to lay optical cables, is cheap, has a short construction period, and has It can reach the level of optical fiber communication; compared with microwave communication, the bandwidth is 1 to 2 orders of magnitude higher than microwave, and no frequency application is required. At the same time, wireless optical communication equipment has a series of advantages such as flexible networking, no electromagnetic interference, good concealment, excellent...

AI Technical Summary

Problems solved by technology

Although the antenna tracking function of this product can reduce the line-of-sight deviation caused by the slight shaking of the building, it does not have a large-scale fast APT function

Existing products for mobile FSO systems use mechanical tracking and targeting methods, and their tracking and targeting speed cannot match the moving speed between communication targets, or require a long feedback time after obtaining specific coordinate information. These problems This makes it impossible for both communicating parties to perform real-time tracking when they move in a large range, which in turn leads to interruption of communication

Therefore, the existing APT technology is still not suitable for large-scale and fast-moving FSO systems

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