Self-adaptive optical star target imaging system based on image clearing principle

Abstract

The invention relates to an adaptive optical aster target imaging system based on image clearing principle, mainly comprising receiving telescope, spectroscope, reflection deformable mirror, high-voltage amplifier, photo detector, main control computer, control algorithm, high-speed digital processor and image-quality diagnosis system. The invention can make use aster target itself as beacon. It is not need that dear wave-front sensor is used to measure the wave-front error of beam from space target. Image clearing index, which can reflect wave-front error information, can be used to measure quality factor for system imaging ability. By controlling the reflection deformable mirror to correct the wave-front error the quality factor can achieve or approach the optimal value. The invention is provided with simple structure, easy regulation, real-time imaging, convenient control, and eliminating or decreasing bacon no-isoplanatic error. Under the condition of very strong atmospheric turbulence aster target can be imaged effectively. The cost of conventional adaptive optical system for imaging compensation of aster target can be decreased greatly.

Description

technical field [0001] The invention relates to an adaptive optics imaging system, in particular to an adaptive optics star object imaging system that does not need a wavefront phase detector, is low-cost, and is based on the principle of image clarity. Background technique [0002] The dynamic disturbance of atmospheric turbulence not only makes the star objects observed by the telescope vibrate constantly, but also constantly changes the shape of the imaging spot. Therefore, atmospheric turbulence becomes an important factor limiting the resolution ability of ground-based telescopes. Adaptive optics technology can measure and correct the optical phase wavefront disturbed by atmospheric turbulence in real time, so that the receiving optical telescope can obtain the target image close to the diffraction limit. Therefore, since the 1980s, adaptive optics technology has been used in astronomical observation, laser transmission and other fields have been widely used. A typical...

AI Technical Summary

Problems solved by technology

[0004] The technology of the present invention solves the problem: the existing typical astral target imaging compensation adaptive optics system is expensive, difficult to debug, seriously affected by non-isohalo errors in the background of strong atmospheric turbulence, and difficult to image under low light conditions. The disadvantages of effective detection and imaging of star targets provide an image clearing principle based on the principle of easy debugging, low cost, and effective elimination of non-uniform halo errors of beacons, and effective detection and imaging of stars under weak light conditions. Adaptive Optics Imaging System for Stellar Objects

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