A method and system for orbit correction of a space laser interference gravitational wave detector

Abstract

The embodiments of the invention provide an orbit correction method and system of a space laser interference gravitational wave detector. The orbit correction method comprises the steps: nominal orbitelements and actual orbit elements of the space laser interference gravitational wave detector are obtained, and the average orbit element deviation value of the space laser interference gravitational wave detector is calculated; the nominal orbit elements of the space laser interference gravitational wave detector and perturbation magnitude information of the space laser interference gravitational wave detector are obtained, and an average orbit element perturbation equation of the space laser interference gravitational wave detector is calculated; and according to the geometrical relationship between the virtual formation configuration envelope radius and orbit configuration stability indexes of the space laser interference gravitational wave detector, by combining with the average orbit element perturbation equation, the expected value of the average orbit element deviation value of the space laser interference gravitational wave detector is obtained, and then the average orbit element correction of the space laser interference gravitational wave detector is calculated. According to the orbit correction method, fuel consumption can be reduced, and the mission life is prolonged.

Description

technical field [0001] The invention relates to the technical field of aerospace science and technology, in particular to a method and system for orbit correction of a space laser interference gravitational wave detector. Background technique [0002] Gravitational waves are a famous prediction of general relativity. On February 11, 2016, the Laser Interferometer Gravitational-Wave Observatory (LIGO) of the United States announced that it had successfully observed the gravitational waves generated by the merger of double black holes, labeled as GW150914, and the gravitational waves were confirmed by astronomical observations. However, limited by the noise of the ground system and the arm length, the ground-based gravitational wave detection system can only detect high-frequency gravitational wave signals. In order to detect the medium and low frequency gravitational waves produced by supermassive black hole mergers and other astronomical events, ESA and NASA proposed to joi...

AI Technical Summary

Problems solved by technology

However, there are still relatively few studies on orbit correction methods for space laser interferometric gravitational wave detectors

[0004] In the spacecraft orbit correction method proposed in the prior art, the focus is on the orbit correction control method without considering the calculation of the orbit correction amount. For the space laser interference gravitational wave detection task, the stability of the equilateral triangle configuration of the detector only needs to be guaranteed Within a certain range, there is no corresponding method to effectively correct the orbit of the space laser interference gravitational wave detector in the prior art

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