Multi-view-field starry sky observation satellite target attitude planning method

Abstract

The invention relates to a multi-view-field starry sky observation satellite target attitude planning method, which comprises the following steps of: 1, acquiring seasons or months of starry sky observation of a satellite, a satellite orbit height and a stray light suppression angle of imaging optical equipment; 2, according to the projection relation between the selectable view field and the observable sky area of the optical equipment, providing the selectable sky area of each piece of optical equipment; 3, selecting an observation point set according to the distribution of fixed stars in the selectable sky area, obtaining the direction of each optical device under the observation point under the celestial coordinate system, judging whether the optical device is in the available sky area, and deleting unavailable observation points; 4, counting the number of fixed stars in the field of view of the camera under the available observation points, and optimizing the available observation points; and 5, repeating the steps 3 and 4 until a satisfactory observation point set is found, and outputting the right ascension and declination of the optimal observation point and a satellite attitude conversion matrix. According to the invention, ideal observation sky areas and target attitudes are provided for multi-view-field star sky imaging of remote sensing satellites and astronomical observation satellites.

Description

technical field [0001] The invention relates to a multi-field star observation satellite target attitude planning method, which belongs to the field of satellite target attitude planning and is applied to imaging region selection and attitude planning when remote sensing satellites and astronomical observation satellites perform multi-field starry imaging. Background technique [0002] When the payload of a remote sensing satellite is a camera, radiometric calibration or geometric calibration can be performed on star imaging, which requires multiple cameras or star sensors to simultaneously image the starry sky. [0003] Since remote sensing satellites are designed for ground imaging requirements, there are some problems in imaging the starry sky, such as the limited number of observed celestial bodies due to the small field of view of the camera, and optical equipment (cameras, star sensors, etc.) At present, there is still a lack of corresponding observation sky area and t...

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Problems solved by technology

[0003] Since remote sensing satellites are designed for ground imaging requirements, there are some problems in imaging the starry sky, such as the limited number of observed celestial bodies due to the small field of view of the camera, and optical equipment (cameras, star sensors, etc.) At present, there is still a lack of corresponding observation sky area and target attitude planning methods in related fields

[0004] In addition to remote sensing satellites imaging the starry sky, some astronomical observation space science satellites need to image specific sky areas due to the needs of exploration missions. At present, in the literature on mission planning of astronomical observation satellites, more fixed-point targets are considered. The number of visits, extended observation time, minimization of energy consumption, and starry sky coverage and other issues rarely involve the attitude planning problem of multi-field cameras imaging the starry sky at the same time

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