Simulator of star sensor

Abstract

The invention provides a simulator of a star sensor. The simulator comprises a collimating objective lens, wherein a focal plane of the collimating objective lens is provided with a star point target; the star point target is imaged at infinity through the collimating objective lens; a light splitting component is arranged between the collimating objective lens and the star point target; the focal plane of a light splitting optical path on the side face of the light splitting component is also provided with a detection target; the star point target is fixed on a focal plane adjusting mechanism; and a target lighting device is used for lighting the star point target. In the simulator, a technology which is different from the scheme of the conventional star simulator is adopted, so that theproblem of poor accuracy of simulation of angular distance between stars of the conventional star simulator is solved; and the simulator can be used for extremely-high-accuracy simulation of a star and asteroid array of an asteroid autonomous navigation extremely-high-accuracy star sensor, verification of measurement accuracy and autonomous navigation and positioning accuracy of the star sensor, and has broad application prospect in research of a deep space autonomous navigation sensor.

Description

technical field [0001] The invention relates to a simulator for a star sensor, which can be used as a target simulator for semi-physical simulation experiments of autonomous navigation, and can also be used for lens testing of deep space navigation sensors and optical system testing of other imaging optical sensors. Background technique [0002] In the field of aerospace technology, the star sensor is a kind of optical sensor that determines the attitude of the spacecraft by measuring the angular position of the star in the inertial space by imaging. When the star sensor is used for functional inspection and performance inspection, a common method is to generate a star simulation imaging target through a star simulator, enter the lens of the star sensor, image it on the focal plane of the star sensor, and simulate it according to the angular distance distribution of the target Image the star images related to the distribution of star maps in space. [0003] After investigat...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a simulator of a star sensor with a long focal length and high-precision variable simulation star lattice, which is a dynamic star simulator based on optical fiber lighting control. In order to obtain high-precision simulation, the collimator adopts Ultra-long focal length, which solves the problem of stellar target simulation for this class of stellar sensors

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