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A Method for Wavefront Reconstruction of Adaptive Optics System Based on Compressive Sensing Technology

A technology of adaptive optics and compressed sensing, applied in optical fiber transmission, optical fiber radio, instruments, etc., can solve the problems of large data volume, high data transmission and storage pressure, reduce data transmission and storage pressure, facilitate voltage control, improve Measuring the effect of velocity

Active Publication Date: 2022-04-22
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for wavefront reconstruction of an adaptive optics system based on compressed sensing technology, which solves the problems of large data volume, high data transmission and storage pressure in the prior art

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  • A Method for Wavefront Reconstruction of Adaptive Optics System Based on Compressive Sensing Technology
  • A Method for Wavefront Reconstruction of Adaptive Optics System Based on Compressive Sensing Technology
  • A Method for Wavefront Reconstruction of Adaptive Optics System Based on Compressive Sensing Technology

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Embodiment Construction

[0061] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0062] The present invention provides a method for wavefront reconstruction of an adaptive optics system based on compressive sensing technology, such as figure 1 As shown, the specific steps are as follows:

[0063] Step 1, the average slope (wavefront slope) of the wavefront in the sub-aperture measured by the wavefront sensor is sparsely represented under the sparse dictionary;

[0064] let g x , g y are the slope signals that need to be sparsely represented in the x and y directions respectively, and the slope signal g x , g y In the sparse dictionary ψ∈R M×N The following sparse representation is:

[0065] g x =ψα x , g y =ψα y (1)

[0066] In formula (1), α x ∈R M×N , α y ∈R M×N are sparse matrices in the x and y directions, respectively;

[0067] In step 2, the wavefront slope is sparsely measured using the observation...

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Abstract

The invention discloses a method for reconstructing the wavefront of an adaptive optical system based on compressed sensing technology. The process is as follows: step 1, performing sparse representation of the wavefront slope in a sparse dictionary; step 2, using an observation matrix to calculate the wavefront slope Sparse measurement is performed to obtain the slope measurement value; step 3, the wavefront slope is reconstructed through the sparsity adaptive matching pursuit algorithm; step 4, according to the wavefront slope, the coefficient matrix of the Zernike polynomial is calculated, and the phase of the wavefront is reconstructed. The method of the invention solves the problems of large data volume, high data transmission and storage pressure in the prior art.

Description

technical field [0001] The invention belongs to the technical field of wireless optical communication, and relates to a method for reconstructing a wavefront of an adaptive optical system based on compressed sensing technology. Background technique [0002] The wireless optical communication technology using laser as the information carrier has become the most potential communication method at present. It has received widespread attention and application. In near-ground wireless laser communication, due to the complexity of the atmospheric structure itself, as well as the influence of the randomness and variability of atmospheric motion, the laser is particularly susceptible to interference by atmospheric turbulence during propagation, causing the laser beam to Produce such as light intensity flicker, source image jitter, beam shift and some other optical effects. In addition, the uneven refractive index of the atmosphere caused by changes in atmospheric turbulence causes ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2575G06K9/62
CPCH04B10/2575G06F18/28
Inventor 柯熙政郝佳萱
Owner XIAN UNIV OF TECH