Large-aperture spliced telescope co-phase method, device and equipment and storage medium

A telescope and large-aperture technology, applied in the field of telescopes, can solve problems such as large quantity and limited software quantity.

Active Publication Date: 2020-11-20
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004]Traditional spliced ​​binoculars mostly use Hartmann sensors for wavefront sensing, but due to the limitation of the field of view of the optical system, only one single For wavefront sensing of targets, the number of controllable software is greatly limited, and the number of correcting mirror groups and reflective elements in the next-generation large-aperture telescopes are large

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  • Large-aperture spliced telescope co-phase method, device and equipment and storage medium
  • Large-aperture spliced telescope co-phase method, device and equipment and storage medium
  • Large-aperture spliced telescope co-phase method, device and equipment and storage medium

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Embodiment Construction

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of them. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in the field without creative labor are within the scope of the present invention.

[0043] The invention provides a co-phase method for a large-aperture spliced telescope, which comprises the following steps of Figure 1 Shown in, including the following steps:

[0044] S101. After the confocal adjustment of the spliced telescope, the large field terminal is used to image the starry sky, and the first star point images with different fields of view are obtained as reference PSF images;

[0045] In practical application, for the large-aperture telescope that has already...

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Abstract

The invention discloses a large-aperture spliced telescope co-phase method, device and equipment and a storage medium, and the method comprises the steps: carrying out the star sky imaging through a large-view-field terminal, and obtaining first star point images of different view fields as a reference PSF image; translating the sub-mirror on the outermost ring of the spliced telescope to the maximum range to obtain second star point images of different fields of view as occlusion PSF images; performing Fourier transform on the reference PSF image and the shielded PSF image to obtain an OTF image difference, obtaining wrapping phases of different fields of view, and unwrapping the wrapping phases; and training a neural network by taking the phase information obtained after unwrapping and the conjugate graph thereof as inputs and taking the previous 37-order Zernike polynomial as an output, obtaining wavefront information of different fields of view through the trained neural network, and performing resolving to obtain the actual surface shape of the measured element. In this way, high-resolution wavefront detection data can be obtained by combining the OTF technology with the neural network, and the actual surface shape of the element can be accurately obtained.

Description

Technical field [0001] The invention relate to that technical field of telescopes, in particular to a co-phase method, a device, equipment and a storage medium for a large-aperture splice telescope. technical background [0002] Black hole, dark matter and dark energy, the origin of the universe, the origin of celestial bodies, the origin of cosmic life, etc., are the hot topics in astronomy in recent years. In order to achieve the above scientific objectives, it is a very important technical means to build a large-aperture ground-based telescope to obtain higher light collection area (proportional to aperture square) and resolution (proportional to aperture). [0003] Due to the limitations of manufacturing technology, transportation and cost, the ultimate aperture of single large-aperture telescope is eight meters. For larger-aperture telescopes, synthetic aperture technology needs to be introduced, including synthesizing with smaller-aperture array and realizing the equivalenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/001G06T2207/20081G06T2207/20084G06T2207/20224
Inventor 安其昌张景旭李洪文唐境
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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