A hybrid approach for orbit optimization of near-Earth asteroid rendezvous missions

Abstract

The invention relates to an orbit optimization method for a near-Earth asteroid rendezvous mission based on hybrid power. The orbit optimization method includes the following contents: establishing a dynamic model of an asteroid detector based on solar light pressure and solar photoelectric hybrid propulsion power; based on physical planning and Gaussian pseudospectral method to design an optimization method for asteroid detection orbit. The advantage of the present invention is that: using a physical planning framework, the multi-objective orbit optimization problem can be transformed into a single-objective optimization problem reflecting the designer's preference. The iterative optimization strategy based on Gaussian pseudospectral method can effectively solve the initial value problem of many variables in the optimization of rendezvous orbits. The multi-objective optimization simulation results show that the hybrid small-travel detector can generate different orbital forms to achieve the minimum fuel consumption and the shortest flight time. The simulation also shows that the mission period of the hybrid probe to continuously rendezvous with four near-Earth asteroids is about five years, which is about a year and a half less than the solar sail probe to complete the same rendezvous mission.

Description

technical field [0001] The invention relates to the technical field of near-Earth asteroid detection, in particular to a hybrid-power-based near-Earth asteroid detector rendezvous task orbit optimization method. Background technique [0002] The detection of near-Earth asteroids is of great significance for studying the origin of the solar system. In addition, near-Earth asteroids are also in danger of colliding with the Earth. In order to remove the potential danger of being collided, many countries have carried out asteroid detection research in recent years; Even multiple asteroid continuous detection plans and near-Earth asteroid observation missions have been proposed to improve the understanding of near-Earth asteroids and eliminate the threat of collision to Earth. However, the current multi-planet rendezvous detection has the defects of high cost and low feasibility. Therefore, how to solve the problems existing in the multi-planet rendezvous through an orbit optimiz...

AI Technical Summary

Problems solved by technology

However, the current multi-planet rendezvous detection has the defects of high cost and low feasibility. Therefore, how to solve the problems existing in the multi-planet rendezvous through an orbit optimization method is an urgent need to be solved at this stage

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