Method for designing a revisiting track of a spacecraft region

Abstract

The invention relates to a method for designing a revisiting track of a spacecraft region, comprising: S1. defining a revisit region and a revisit time interval of a subsatellite point trajectory of the spacecraft on a planetary surface; S2, obtaining orbital parameters of the spacecraft flight trajectory according to mission requirements of the spacecraft; S3. according to the orbital parameters,the revisit region and the revisit time interval, obtaining the ascending intersection longitude range and the ascending intersection longitude interval of the subsatellite point trajectory of the spacecraft in the revisit region; S4. comparing the longitude range of the ascending intersection point with the longitude interval of the ascending intersection point, obtaining the orbital parameterswhen the longitude range of the ascending intersection point is larger than the longitude interval of the ascending intersection point, and generating a spacecraft region revisit orbit according to the orbital parameters. By adopting the method of matching the longitude range of the ascending intersection point with the longitude interval of the ascending intersection point to determine the orbital elements of the regional revisit orbit, the constraints among the orbital elements are reduced, and the orbital elements range satisfying the requirements of the regional revisit can be quickly determined.

Description

technical field [0001] The invention relates to a method for designing orbits, in particular to a method for designing spacecraft area revisit orbits. Background technique [0002] Regional revisit means that the orbit of the sub-satellite point of the spacecraft periodically passes through a certain area on the surface of the planet (such as the surface of the earth). The orbit with this characteristic is called the regional revisit orbit. There is a difference between periodically revisiting a track and returning to a track. The return orbit means that the sub-satellite point trajectory of the spacecraft overlaps periodically, that is, after a certain period of time, the sub-satellite point trajectory returns to the original route. This type of orbit is called a return orbit. The sub-satellite point trajectory of the regional revisit orbit passes through a certain area on the earth's surface periodically, but the sub-satellite point trajectory does not necessarily overlap...

AI Technical Summary

Problems solved by technology

In the existing technology, there is only a method for the design of the return orbit, which is not suitable for the design of the spacecraft's regional revisit orbit, so the design of the regional revisit orbit needs to be solved urgently

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