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Method for simulating stellar magnitude

A technology of star magnitude and combination method, which is applied in optics, instruments, nonlinear optics, etc., can solve the problems of high cost and low precision, and achieve the effect of low cost, high precision and reduced coating precision

Inactive Publication Date: 2011-03-30
XIAN RUIXIN MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-quality, high-fidelity, low-cost method for simulating magnitude, which solves the shortcomings of low accuracy and high cost of existing methods for simulating magnitude

Method used

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  • Method for simulating stellar magnitude
  • Method for simulating stellar magnitude

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Experimental program
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Embodiment Construction

[0057] The first method of simulating magnitude of the present invention, the steps are as follows:

[0058] 1] Use a closed-loop feedback-controlled high-stable light source system to generate broad-spectrum analog light;

[0059] 2] Filter the simulated light to make it have the same spectral characteristics as the simulated star.

[0060] 3] Choose four attenuators from five fixed transmittance attenuators and combine them to attenuate the analog light at different rates

[0061] 4] The attenuated simulated beam is collimated into a parallel beam through a star point plate and a flat star tube.

[0062] Among them, according to the illuminance corresponding to different magnitudes, the transmittance of the fourth attenuator is adjusted when selecting the fourth attenuator. The adjustment is generally selected in the batch of coated products.

[0063] The transmittance selection method of the five fixed transmittance attenuating films is based on the reference film as attenuating film ...

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Abstract

The method comprises: using a highly-stabilized constant light source under the control of closed-loop feedback to generate the wide spectrum simulation light in order to make it have same spectrum characteristic with the simulated fixed star; selecting four attenuators from five attenuators with five kind of fixed transmittances to make combination in order to make attenuation form the simulation light; the attenuated simulation beams are adjusted to form the parallel beam through the star board and the parallel beam tube.

Description

Technical field [0001] The invention relates to a method for simulating magnitude. Background technique [0002] With the development of my country's space technology, spacecraft such as satellites and manned spacecraft require longer lifespan, higher control accuracy and reliability. In the spacecraft attitude control system, the star sensor (hereinafter referred to as the star sensor) is the attitude sensor with the highest measurement accuracy. It has no mechanical moving parts, which is conducive to long life and miniaturization, so it is the most promising spacecraft. And one of the most accurate attitude sensors. The reference object of the star sensor to determine the attitude is the star, and the star simulator (hereinafter referred to as the star simulator) is mainly used for ground detection. The function of the star simulator is mainly to simulate the spectrum, illuminance, parallelism and color temperature of stars at infinity. Therefore, the quality of the star si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B27/04G02F1/01
Inventor 何俊华闫亚东董晓娜仓玉萍
Owner XIAN RUIXIN MICROELECTRONICS CO LTD
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