A Method of Extracting Sun Vector Direction Based on Moon Phase

A sun vector and vector direction technology, applied in the aerospace field, can solve the problems of low precision of the sun vector direction, blurred edge of the moon, etc., and achieve the effects of wide application range, simple calculation, and reduced measurement error

Active Publication Date: 2022-02-15
上海中科辰新卫星技术有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the method in this document is suitable for the situation where the distance from the moon is far away, and compared with the outline of the moon's edge, the edge of the moon caused by the sun will be blurred, so the calculated sun vector direction has low accuracy

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  • A Method of Extracting Sun Vector Direction Based on Moon Phase
  • A Method of Extracting Sun Vector Direction Based on Moon Phase
  • A Method of Extracting Sun Vector Direction Based on Moon Phase

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Embodiment Construction

[0019] In the following description, the present invention is described with reference to various examples. One skilled in the art will recognize, however, that the various embodiments may be practiced without one or more of the specific details, or with other alternative and / or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail so as not to obscure the inventive concepts of the present invention. Similarly, for purposes of explanation, specific quantities, materials and configurations are set forth in order to provide a thorough understanding of embodiments of the invention. However, the invention is not limited to these specific details. Furthermore, it should be understood that the embodiments shown in the drawings are illustrative representations and are not necessarily drawn to correct scale.

[0020] In this specification, reference to "one embodiment" or "the embodiment...

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Abstract

The invention provides a method for extracting the sun vector direction based on the moon phase. In the coordinate system of the lunar sensitive period, the invariance of the angle between the moon edge direction and the sun vector direction is used, and the least squares method and the moon phase information are combined. Calculate the sun vector direction and use the sun vector direction for satellite navigation, which has a wide range of applications.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a method for extracting the sun vector direction based on the moon phase. Background technique [0002] With the development of aerospace technology, the autonomous navigation capability of satellites has become more and more important. Among them, astronomical navigation has become a hot spot for autonomous navigation due to its advantages of high autonomy, strong anti-interference, and no accumulation of errors. It uses external celestial bodies as a reference Satellite autonomous navigation can be quickly realized. As the brightest celestial body on the earth at night, the moon phase changes reflect the relative information between the sun, the moon and the observer, so the sun vector information can be extracted from the moon phase. [0003] The current extraction method of the solar vector method based on the moon phase has a narrow application range and has a large meas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02
CPCG01C21/025
Inventor 杨中光朱晓铖蔡志鸣陈雯余金培
Owner 上海中科辰新卫星技术有限公司
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