Real-time performance evaluation system of self-adaptive optical system

Abstract

The invention provides a real-time performance evaluation system of a self-adaptive optical system. The real-time performance evaluation system comprises an input interface module (1), a programmable logic device (2), a digital signal processor (3), a storage module (4) and an output interface module (5), wherein the input interface module (1) is used for receiving synchronous signals and data signals; the programmable logic device (2) realizes high-speed preprocessing at the front end; the digital signal processor (3) realizes subsequent operation with high complexity; the output interface module (5) is used for outputting calculated performance indexes; and the storage module (4) is used for improving the data and program storage capability of the digital signal processor (3). The real-time performance evaluation system disclosed by the invention realizes evaluation on the compensation capability to atmospheric turbulence disturbance in the working process of the self-adaptive optical system, has the advantages of good real-time property, small size and easy large-scale integration and can be applied to different self-adaptive optical systems on the basis of not changing hardware implementation.

Description

technical field [0001] The invention relates to the technical field of high-speed signal processing systems, in particular to a real-time evaluation system for the performance of an adaptive optical system, which calculates the performance parameters of the adaptive optical system in real time and evaluates its ability to compensate for atmospheric turbulence disturbances. Background technique [0002] Adaptive Optics (AO) technology can detect and correct random wavefront distortion caused by atmospheric turbulence in real time, and is widely used in astronomical observation and laser transmission. The ability of the adaptive optics system to compensate atmospheric turbulent disturbances is directly related to the imaging quality of celestial objects and the laser focusing effect. The following indicators are usually used as the basis for its effect evaluation: Strehl Ratio (SR), half High full width (Full Width HalfMaximum, FWHM), point spread function (Point Spread Functi...

AI Technical Summary

Problems solved by technology

The problems brought about by this method are: 1. It cannot reflect the correction performance of the adaptive optics system in real time and intuitively; 2. It needs to build an imaging system, which makes the structure of the adaptive optics system more complicated. When changing, it is necessary to readjust the optical path of the imaging system, which is inconvenient to use; 3. According to the image characteristics of the target, this method can only be used for the adaptive optical system of the point target, and cannot be used for the adaptive optical system of the extended target, such as the sun's natural Adaptive Optics

The online performance evaluation module of NAOS and the design of SPARTA have the following deficiencies: more chips are used, the hardware cost is high, and the integration level is not high; the computing power is limited, resulting in a long refresh time interval

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