Method for searching for rendezvous objects and rendezvous sequence among large number of space targets considering J2 perturbation

Abstract

The invention relates to the technical field of spacecraft orbit dynamics, and discloses a method for searching for rendezvous objects and a rendezvous sequence among a large number of space targets considering J2 perturbation, in which three mutually embedded layers of optimization processes for solving the number of rendezvous objects, rendezvous time and the rendezvous objects under the restrictions of a given total fuel amount, a given total rendezvous time, a given minimum post-rendezvous retention time and the like are established. The outermost optimization process is used for determining the number of the rendezvous objects, an intermediate optimization process is used for determining the rendezvous time, and the innermost optimization process is used for determining the rendezvous objects. The method provided by the invention has the advantages that effects of J2 perturbation on the space targets and an orbit of a service spacecraft are considered, the specific rendezvous objects and starting and ending times of the rendezvous objects can be determined among the large number of the potential space targets, and the determined number of the rendezvous objects is the maximum number under the given restrictions, so that the capability of the service spacecraft can be exerted to the largest extent, the optimum task execution effects can be obtained, and remarkable engineering application values can be achieved.

Description

technical field [0001] The invention relates to the technical field of spacecraft orbital dynamics, in particular to a consideration J 2 A perturbed large-scale space target rendezvous object and a method for sequential search. Background technique [0002] With the rapid development of aerospace technology, the launch frequency of space vehicles is increasing, and satellites, spaceships, space stations, etc. are increasingly filling the near-Earth space. There are tens of millions of uncontrolled objects floating in the near-Earth space due to the rocket wreckage brought by the launch process, the garbage left in space by the end of life of the spacecraft, and the debris generated by the collision of the spacecraft. They are collectively called space debris[1] . In order to clean the near-Earth space and ensure the sustainable development of human spaceflight activities, in recent years, researchers in the space field of various countries have devoted a lot of energy to r...

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Problems solved by technology

However, when the number of target objects is large, the number of optimization variables of the above method is too large, which will lead to optimization failure or early fall into the local optimal solution.

The second flaw is that all the above methods are applicable to deterministic problems, that is, the number and positions of the target objects to be rendezvous are known in advance

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