Simulator of star sensor

A technology of star sensor and simulator, applied in the direction of instruments, measuring devices, etc., can solve the problems of star sensor star target simulation, etc., and achieve the effects of reducing complexity, large dynamic range, and broad application prospects

Active Publication Date: 2011-07-06
BEIJING INST OF CONTROL ENG
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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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Embodiment Construction

[0031] The simulator of a star sensor according to the present invention will be further described with reference to the accompanying drawings and specific embodiments.

[0032] Such as figure 1 As shown, the stellar sensor simulator of the present invention mainly includes an ultra-long focal length large field of view collimating objective lens 1, a focal plane beam splitter assembly 2, a star point target with a star point hole array 3, and a detection target 4 , Target lighting device 5, focal plane adjustment mechanism 6. It has three working conditions: working condition one is the self-collimating focus state; working condition two is the normal working state of the simulator; working condition three is the imaging quality inspection and calibration state of the self-collimating simulator. For working condition 1 and working condition 3, a self-collimating mirror 7 perpendicular to the optical axis is provided in front of the collimating objective lens 1, which is used for...

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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 the problem 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 stellar sensor simulator, which can be used as a target simulator for autonomous navigation semi-physical simulation experiments, and is also used for deep space navigation sensor lens testing and other imaging optical sensor optical system testing. Background technique [0002] In the field of aerospace technology, a star sensor is a type of optical sensor that determines the attitude of a spacecraft by imaging and measuring the angular position of a star in inertial space. In the functional inspection and performance inspection of the star sensor, a common method is to generate a star simulation imaging target through a star simulator, enter the star sensor lens, and image on the star sensor focal plane, and simulate according to the target angular distance distribution Image the star image of the related star map distribution in space. [0003] After investigation and data query, there are currently single-star simulators and mu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
Inventor 郝云彩王大轶张国玉黄翔宇徐熙平
Owner BEIJING INST OF CONTROL ENG
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