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Star map recognition method and device based on geometric verification

A star map identification and geometric verification technology, applied in the field of star map identification based on geometric verification, can solve the problems of complex methods, poor adaptability of false stars and missing stars, etc.

Pending Publication Date: 2021-04-16
NAT UNIV OF DEFENSE TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, the method of determining the attitude of the spacecraft according to the stars captured in the FOV is complicated, and the adaptability to pseudo-stars and missing stars is poor

Method used

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  • Star map recognition method and device based on geometric verification
  • Star map recognition method and device based on geometric verification
  • Star map recognition method and device based on geometric verification

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments It is a part of the embodiments of the present disclosure, but not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

[0051] In addition, the term "and / or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and / or B, which may mean: A exists alone, A and B exist at the same time, There are three cases of B alone. In addition, the character " / " in this art...

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Abstract

The invention provides a star map recognition method and device based on geometric verification. The method comprises the following steps: acquiring a current to-be-identified star map, wherein the current to-be-identified star map is one of a plurality of star maps acquired by a star sensor; matching the star map to be identified with an observation star map in a pre-established star map database; and in response to successful matching, taking the coordinate corresponding to the matched target observation star map as the coordinate of the star sensor, and determining the position attitude of the aircraft. In this way, the method for determining the attitude of the spacecraft according to the fixed stars captured in the FOV can be simplified, and meanwhile the method has high adaptability to fake stars and missing stars.

Description

technical field [0001] Embodiments of the present disclosure generally relate to the technical field of image processing, and more specifically, relate to a method and device for star pattern recognition based on geometric verification. Background technique [0002] In aerospace, determining the attitude of a spacecraft is important, so developing a reliable and accurate attitude measurement system is one of the important tasks. Over the past few decades, gyroscopes, sun sensors, GPS and star sensors (also known as star trackers) have been developed and widely used. Among them, the star sensor is a space attitude sensor with high accuracy and reliability. It determines the attitude of the spacecraft by observing the stars which are widely used. The stellar sensor first acquires an image of stars in the sky and then matches it with a star database (SPD) stored in memory to identify stars within a defined field of view (FOV) and determine the attitude of the spacecraft. [...

Claims

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Application Information

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IPC IPC(8): G01C21/02
Inventor 蒋杰方玉杰康来魏迎梅谢毓湘邹银辛星孙家豪刘阳
Owner NAT UNIV OF DEFENSE TECH
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