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A method for fast generating an optical starry sky background

A starry sky background and fast technology, applied in the field of optics, can solve problems that cannot satisfy high-speed simulation and speed up the generation of starry sky optical background

Inactive Publication Date: 2014-03-26
中国航天科工集团第二研究院二〇七所
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Problems solved by technology

After testing, the current generation speed is about 1Hz, which cannot meet the requirements of high-speed simulation. Therefore, it is necessary to find a new method to speed up the generation speed of the starry sky optical background.

Method used

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  • A method for fast generating an optical starry sky background
  • A method for fast generating an optical starry sky background
  • A method for fast generating an optical starry sky background

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 As shown, the rapid generation method of the optical starry sky background of the present invention comprises the following steps:

[0038] Step 1: Model the starry sky background

[0039] The construction of the starry sky model is mainly based on the knowledge of computational astronomy, using stellar catalog data as the source, through the conversion of time and coordinate system, and the correction of the apparent position of the celestial body, the starry sky background model at any time and any observation point is accurately constructed, and the The calculation results are stored in the library for use in simulation. Calculation results include star name, magnitude, right ascension and declination, etc.

[0040] (1) Select the data source

[0041] The star catalog data published internationally is the main b...

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Abstract

The invention belongs to optical technical field and specifically relates to a method for fast generating an optical starry sky background. The method comprises following steps including: a step 1, modeling a sky background in which star catalogue data of fixed stars is used as a source, by means of transformation of time and a coordinate system and correction of the apparent positions of heavenly bodies, starry sky background models at any observation point any time are constructed and a calculating result is inputted into a base in order to be used for simulation, wherein the calculating result comprises star names, star magnitudes, right ascension, and declination; and a step 2, simulating the established starry sky background model. The step 1 uses Hipparcos Catalogue as a data source of a visible light band. According to the selected Hipparcos Catalogue, the apparent positions of the fixed stars are calculated. Considered factors comprise annual parallax and proper motion caused by revolution of the earth, aberration caused by the self motion of an observer, annual aberration, precession, and nutation caused by earth revolution about the sun. The speed for generating a starry sky background by using the method may reach 50Hz.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a method for quickly generating an optical starry sky background. Background technique [0002] The main object of starry sky background modeling research is stars, and the star catalog data published internationally is the main basis for the generation of celestial light radiation background. Based on the basic theories of spherical astronomy, celestial mechanics, and celestial body radiation characteristics, the modeling of starry sky background is realized. method. According to the existing model of typical target light radiation and scattering characteristics, the target and background are synthesized, and the dynamic scene output is realized by using the computer. [0003] In 1983, after the United States, Britain, and the Netherlands jointly launched infrared astronomical satellites, a large amount of astronomical data was obtained. Combined with the observati...

Claims

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Application Information

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IPC IPC(8): G06T17/00G09B27/04
Inventor 范小礼黄建峰李霞钱坤
Owner 中国航天科工集团第二研究院二〇七所
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