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A static star simulator with continuously adjustable star magnitude and sky background

A technology of sky background and background, applied in the field of spacecraft ground testing and calibration, to achieve the effect of simple composition and compact structure

Active Publication Date: 2018-06-01
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In view of the defect that the existing star simulator can only star map but not superimpose the background simulation information, it is proposed to use the beam splitter as the beam combiner, cooperate with the collimation optical system, the star reticle, the background reticle, the star point light source, the background light source And ground support, build a static star simulator that can realize continuous magnitude adjustment and continuous background adjustment. The magnitude adjustment accuracy is better than ±0.3Mv, and the background adjustment accuracy is better than 0.1W / ㎡

Method used

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  • A static star simulator with continuously adjustable star magnitude and sky background

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Embodiment Construction

[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. It should be noted that, in the drawings or description, similar or identical elements all use the same reference signs.

[0013] figure 1 A schematic diagram of the composition and structure of a static star simulator with continuously adjustable sky background with continuously changing magnitude provided by the embodiment of the present invention, as shown in figure 1 As shown, the static star simulator with continuously adjustable sky background with continuously changing magnitude includes a collimating optical system 1, a beam splitting prism 2, a star reticle 3, a background reticle 5, a star point light source 4, and a background light source 6 With the ground support 7, ...

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Abstract

The invention discloses a static star simulator with continuously adjustable sky background with continuously changing magnitude. composition. The star reticle is located at the first focal plane of the collimating optical system, and the background reticle is located at the second focal plane of the collimating optical system. After the action of the dichroic prism and the collimating optical system, the form of parallel light can be realized. The starry sky image with adjustable star point and magnitude is superimposed under the changeable background illumination.

Description

technical field [0001] The invention relates to spacecraft ground testing and calibration technology, in particular to a static star simulator. Background technique [0002] As a ground test and calibration device for star sensors, star simulators are divided into static star simulators and dynamic star simulators according to different star map simulation methods. The static star simulator uses the star reticle as a star map display device. According to the accurately calculated star point position, the laser direct writing technology can be used to delineate the simulated star point with an accuracy better than 1 μm, and cooperate with the collimation optical system It can realize the high-precision simulation of the star map; the dynamic star simulator uses liquid crystal light valve, LCOS or DMD as the star map display device, and can realize the continuous simulation of the star point position according to the observation needs of the star sensor at different times. Bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 孙高飞刘石张国玉张健何洋王凌云郑茹苏拾王浩君陈启梦
Owner CHANGCHUN UNIV OF SCI & TECH
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