Calculation method and application of top-crossing moment of circular orbit satellite

Abstract

The invention relates to the technical field of aerospace, and provides a calculation method and the application of top-crossing moment of a circular orbit satellite. The method comprises the steps: uploading a ground target geographic longitude Jtg and a geographic latitude Wtg by a ground control station, and calculating a longitude range delta J spanned by a satellite in an orbit period by a circular orbit satellite; calculating the moment Twp when the satellite passes through the ground target latitude; calculating the number of orbital turns required to be spanned by the satellite from the position of the time Twp to the ground target position; calculating the position of the ground target in the orbital coordinate system at the satellite top crossing moment; calculating a side swing angle theta of the ground target; and autonomously performing task planning according to the side swing angle theta of the ground target by the satellite. The problems that in the prior art, ground task planning is heavy in workload and large in uploading data volume, and a satellite cannot autonomously complete task planning are at least partially solved, the workload of ground task planning is simplified, the uploading data volume is reduced, and a technical foundation is laid for on-orbit automatic operation of a large-scale remote sensing constellation.

Description

technical field [0001] The present invention generally relates to the field of aerospace technology, in particular to a calculation method and application of a circular orbit satellite overhead moment. Background technique [0002] With the rapid development of aerospace technology, higher and higher requirements are put forward for the autonomous planning of on-orbit missions of intelligent satellites. For circular orbit satellites, calculating the overhead moment of ground targets is the basis for satellite planning on-orbit missions. [0003] In the existing technology, when calculating the overhead time of the ground target of the circular orbit satellite, it still relies on the ground control station for calculation; the ground control station needs to calculate the overhead time of the ground target, complete the mission planning and add data, and there is a ground mission planning Due to the heavy workload and large amount of data, the satellite cannot complete the t...

AI Technical Summary

Problems solved by technology

[0004] In view of the existing technology, when calculating the overhead time of the ground target of the circular orbit satellite, it still relies on the ground control station for calculation; the ground control station needs to calculate the overhead time of the ground target, complete the task planning and add data, and there is a ground task planning The workload is heavy, the amount of above-mentioned data is large, and the satellite cannot complete the task planning independently. The present invention proposes a calculation method and application of the overhead time of the circular orbit satellite to at least partially solve the above-mentioned problems

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