Wavefront signal processing platform of thousand-unit-level self-adaptive optical system

Abstract

The invention discloses a wavefront signal processing platform of a thousand-unit-level self-adaptive optical system. The wavefront signal processing platform of the thousand-unit-level self-adaptive optical system uses a wavefront error detecting module (1) to perform wavefront slope detection on a subspot; with a subaperture line as a pace, slope data is sent to three resetting control modules (2) in a broadcasting way through a set of local bus I on an interconnecting backplate (4); the three resetting control modules form an MIMD (multiple instruction multiple data) array machine to perform voltage solving and PID (proportion integration differentiation) control operation of a deformable mirror actuator; three paths of digital control voltages are output to an amplifying system of the deformable mirror actuator; data communication is realized among the three resetting control modules through another set of local bus III; and a signal processing platform uses a monitoring host (3) to load parameters and monitor signals of the wavefront error detecting module and the three resetting control modules through a PCI (peripheral component interconnecting) bus II. Compared with the conventional implementing way, the wavefront signal processing platform of the thousand-unit-level self-adaptive optical system has the characteristics of good timeliness, small volume and high integration.

Description

technical field [0001] The invention relates to an adaptive optics high-speed wavefront processing system, in particular to a wavefront signal processing platform of a thousand-unit level adaptive optics system. Background technique [0002] Large-scale ground-based telescopes are usually equipped with an adaptive optics system to improve the imaging resolution of the telescope system. In order to obtain a resolution image close to the diffraction limit, the number of correction units of the adaptive optics system must match the aperture of the telescope. The number of correction units N and The relationship between the telescope aperture D can be expressed as: [0003] N=(D / r 0 ) 2 (1) [0004] Among them: r0 represents the atmospheric coherence length, usually more than ten centimeters. According to formula 1, for a telescope with an aperture of 1.8 meters, the number of correction units of the adaptive optics system is about 150 units, and for a telescope with...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the shortcomings of the existing wavefront signal processing platform with low processing capability and the published thousand-unit level wavefront signal processing platform has poor integration, many fault links, and poor engineering applicability, the present invention proposes a thousand-unit level adaptive optical system Wavefront signal processing platform, which is composed of 1 wavefront error detection module, 3 restoration control modules and 1 monitoring host, can complete the wavefront signal processing of the thousand-unit level adaptive optical system, and can realize the deformation Mirror voltage filtering operation, the present invention has the characteristics of strong processing capability, high integration and good engineering applicability

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