Deep space optical communication tracking and aiming system and method

Abstract

The invention discloses a deep space optical communication tracking and aiming system and a deep space optical communication tracking and aiming method. The system is provided with an internal inertia reference light source and two array cameras. The internal inertia reference light source has the wavelength different from that of external target beacon light. The inertia reference light source inside the system is imaged by a small array camera through a color separation film; a rapid tilting mirror is subjected to closed-loop control according to position deviation of image points, so that an optical axis of an optical path of the system is stable; the external target beacon light is imaged by a big array camera; and a tracking center of the small array camera is regulated according to the position deviation of the image points so as to fulfill the aim of stably and accurately tracking. The invention can greatly reduce the requirement on the power of a target terminal beacon light laser in the deep space optical communication, and provides feasibility guarantee implementation of the system.

Description

Technical field: [0001] The invention relates to space optical communication tracking and targeting technology, in particular to a deep space optical communication tracking and targeting system and tracking method, which can be applied to deep space optical communication. Background technique: [0002] Compared with other classical communication methods, space optical communication has the advantages of small system size, high communication rate and good confidentiality. However, in order to improve the communication distance and reduce the system resources, the divergence angle of communication light is generally close to the emission diffraction limit (less than 10urad). In order to achieve the alignment of communication light with extremely narrow divergence angle at long distances, an acquisition tracking and targeting system (ATP system) is required. The ATP system is used to establish and maintain optical links between communication terminals, and the tracking accuracy...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a novel tracking and aiming system and method applied to deep space optical communication, which adopts the combination detection method of internal inertial reference light source and external target beacon light, which reduces the detection frame rate of external beacon light, So as to solve the problem that the current system requires too much beacon light power

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