Constellation design method

Abstract

The invention discloses a constellation design method, and the method comprises the steps: determining the area of an observed fixed region, and determining a corresponding circular coverage region when a single satellite covers the observed fixed region according to the area; determining a view field angle or a beam angle of the observed fixed region according to a preset view field pointing constraint condition, and calculating the orbit height of the single satellite according to the circular coverage region and the view field angle or the beam angle; determining the number of satellites required for covering one latitude zone region, an orbit inclination angle and a difference value of true near-point angles of two adjacent satellites in the same orbit plane according to the circular coverage region, and determining the number of orbit planes according to the number of satellites; and calculating the number of satellites in the same orbital plane according to the difference, calculating the total number of satellites according to the number of orbital planes and the number of satellites in the same orbital plane, and designing a satellite constellation. The technical problem that in the prior art, constellations are not suitable for serving ground fixed areas and observing fixed areas in celestial spheres is solved.

Description

technical field [0001] The present application relates to the technical field of satellite constellations, in particular to a constellation design method. Background technique [0002] With the rapid development of satellite communication technology, low-orbit Internet constellations represented by starlink and Kuiper can achieve seamless global coverage. Such constellations can not only observe the ground area, but also be converted into observation constellations for the celestial sphere. Among them, this The transformation of class-like constellations into celestial observation constellations can realize the integration of real-time astronomical observations and the coverage advantages of large-area celestial spheres, and may give birth to new economic and industrial forms in the field of astronomical observations, such as popular astronomical entertainment, consumption, and education industries. However, due to the large scale of such constellations and the high cost of ...

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Problems solved by technology

[0004] The technical problem solved by this application is: in view of the problem that the constellation in the prior art is not suitable for serving fixed areas on the ground and observing fixed areas in the celestial sphere, this application provides a constellation design method. In the scheme provided by the embodiment of this application , which provides a kind of constellation configuration orbit for the ground fixed area service and the low-orbit constellation supported by the fixed area in the celestial sphere, which can rely on the minimum number of constellation nodes to realize the 24h continuous visibility of the fixed area on the ground and the fixed area in the celestial sphere The satellite nodes in the constellation, therefore, achieve 24h continuous visibility of the constellation to a fixed area within the earth or celestial sphere

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