High-precision double star laser interference dynamic distance measuring ground simulation device

Abstract

The invention provides a high-precision double star laser interference dynamic distance measuring ground simulation device which at least comprises a vibration-isolation system, a vacuum system, a light source system, an interferometer, a first horizontal moving system, a second horizontal moving system, a phase detection system and a data analyzing system. The vibration-isolation system is used for isolating and filtering outside vibration noise and reducing the vibration noise of a system. The vacuum system is used for reducing thermal noise brought by temperature fluctuation of the system. The light source system is used for providing two laser beams which are high in stability and high in frequency stabilization. The interferometer is used for generating three paths of heterodyning interference signals which have the identical arm length and simulating satellite orbit dissociating motion information and scientific signal information caused by gravitational waves or a gravitational field or the like. The first horizontal moving system is used for simulating scientific signals caused by gravitational waves or a gravitational field or the like. The second horizontal moving system is used for simulating satellite orbit dissociating signals. The phase detection system is used for carrying out phase detection on interference signals, collecting phase information and carrying out inversion displacement. The data analyzing system is used for estimating dynamic distance measuring precision of an interfering system and extracting scientific signals from mixed signals. The high-precision double star laser interference dynamic distance measuring ground simulation device can achieve ground simulation of high-precision double star laser interference dynamic distance measuring.

Description

technical field [0001] The invention relates to a high-precision double-star laser interference dynamic range-finding ground simulation device, which can be used for precise measurement of displacement changes between double-stars, and the range-finding accuracy can reach picometer level. Background technique [0002] The laser interferometer uses a beam splitter to divide a beam of laser light into two beams, one way passes through a known distance to form a reference interference, and one way is incident on the measurement target to reflect and form a measurement interference, and the reference interference and measurement are read out through the detector and phase meter The phase difference data of the interference can be used to obtain the distance information of the target. The space laser interferometry system uses laser interferometry to measure the distance change between two stars, so as to obtain the change of star distance caused by scientific signals such as gra...

AI Technical Summary

Problems solved by technology

[0005] A technical problem solved by the present invention is to provide a high-precision dual-star laser interference dynamic ranging ground simulation device, which can effectively solve the problem of low ranging accuracy and the inability to realize free signal simulation, scientific signal simulation, and system dynamic ranging in orbit. Functional simulation, as well as various problems such as the lack of experimental methods and technical processes for the separation of orbital data and scientific data

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