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Star sensor measuring coordinate system to prism coordinate system measuring method and system

A technology for measuring coordinate systems and star sensors, applied in the field of astronautical starry sky detection, can solve the problems of human eye judgment, complicated operation process, unsuitable for high-precision batch measurement, etc., and achieves stable test light source, convenient operation and good repeatability. Effect

Active Publication Date: 2019-04-19
SHANGHAI AEROSPACE CONTROL TECH INST
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Problems solved by technology

[0004] The existing technical means is to take the photoelectric theodolite as the measurement reference, and its error transmission accuracy is between 0.5 "to 2". In combination with the transmission of other error chains in the measurement process, the measurement accuracy obtained by the final measurement is 20 ", and the process Human eyes judge and the operation process is complicated, so it is not suitable for high-precision batch measurement

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  • Star sensor measuring coordinate system to prism coordinate system measuring method and system
  • Star sensor measuring coordinate system to prism coordinate system measuring method and system
  • Star sensor measuring coordinate system to prism coordinate system measuring method and system

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Embodiment Construction

[0045] 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 drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] It should be noted that in this document, relational terms such as "first", "second", "third", etc. (if any) are only used to distinguish one entity or operation from another entity or operation, and No such actual relationship or order between these entities or operations is necessarily required or implied. It is to be understood tha...

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Abstract

The invention relates to a star sensor measuring coordinate system to prism coordinate system measuring method and system. The method comprises steps that the optical axis direction of a single star simulator is determined through a plane mirror; the mounting position of a photoelectric autocollimator is determined; auto-collimation of the first direction and / or the second direction of the plane mirror and a star sensor reference prism is performed through the photoelectric autocollimator; a rotation angle of the first direction of a coordinate system around the first direction of a prism coordinate system, a rotation angle of the second direction of the coordinate system around the second direction of the prism coordinate system and a rotation angle of the third direction of the coordinate system around the third direction of the prism coordinate system are respectively obtained. The method is advantaged in that high precision measurement equipment is utilized, not only operation is simple and reliable, but also measurement precision is greatly improved.

Description

technical field [0001] The invention relates to the technical field of aerospace starry space detection, in particular to a method and system for measuring from a star sensor measurement coordinate system to a prism coordinate system. Background technique [0002] The star sensor is a low-light photoelectric sensor with star light as the observation object. The measurement accuracy of the high-precision star sensor can reach 3-5 arc seconds, and the very high precision can reach 1-3 arc seconds, which is sensitive to stars. The great challenges brought by the sensor software algorithm, calibration method, and installation error of the optical system. [0003] At this stage, the installation deviation from the mechanical coordinate system of the domestic star sensor to the prism coordinate system is controlled within 90″, and the installation deviation from the measurement coordinate system to the prism coordinate system is within 300″. The above installation deviations will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 杜伟峰王燕清金荷吴永康闫晓军杨宵陆建
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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