A method for establishing a navigation catalog for infrared star detection based on a diurnal star sensor

A technology of star sensor and establishment method, which is applied in astronomical navigation, instruments, special data processing applications, etc., to achieve the effect of improving the success rate of star map recognition, the probability of increasing, and the probability of observation

CN103884336BActive Publication Date: 2016-08-24BEIJING INST OF CONTROL ENG

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: BEIJING INST OF CONTROL ENG
Publication Date: 2016-08-24

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Abstract

The invention relates to an establishment method of a daytime star sensor-based infrared star detection navigation star catalogue, and belongs to the technical field of design of aerospace attitude sensors. The method comprises the following steps of extracting fixed stars of which any band is higher than or equal to the magnitude 8 from a 2MASS astronomical catalogue, and removing redundant information to form a basic star catalogue for cross certification; performing star catalogue cross certification on data sources of the obtained basic star catalogue and a check star catalogue; performing data fusion on the data sources of the basic star catalogue and the check star catalogue, which pass the star catalogue cross certification, to obtain a star catalogue database; performing file format finishing database establishment on the obtained star catalogue database, wherein the finished star catalogue database comprises a main data file and a data index file; performing instrument star magnitude conversion on the data source of the finished star catalogue database to establish an instrument star magnitude star catalogue; and performing star catalogue homogenizing on the obtained instrument star magnitude star catalogue, and generating a daytime star sensor-based navigation star catalogue by using the homogenized star catalogue database.

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Description

technical field

[0001] The invention relates to a method for establishing an infrared star detection and navigation catalog based on a diurnal star sensor, and belongs to the technical field of aerospace attitude sensor design. Background technique

[0002] The star sensor is an optical attitude sensor with stars as the measurement target, which can output high-precision attitude information. Star map recognition is the core technology of star sensors, and the establishment of navigation star catalogs is an important prerequisite for star map recognition. At present, star sensors mainly work at night, and the problem of star observation in daytime environment has not been solved yet.

[0003] Observing starlight during the daytime in the atmosphere must be affected by scattered sunlight, and the limit value of detectable magnitude will vary greatly due to changes in these conditions. The daylight sky irradiance in the infrared band is much lower than that of visible light,...

Claims

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