System and method for realizing high-precision orthogonality adjustment of image surface of star sensor
A star sensor and adjustment system technology, applied in the direction of instruments, optical components, optics, etc., can solve the problems of low efficiency and low adjustment accuracy of the adjustment method, save adjustment time, quantify the measured parameter index, and shorten the installation and adjustment The effect of the test cycle
Active Publication Date: 2019-06-11
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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[0004] The purpose of the present invention is to solve the problems of low efficiency and low adjustment accuracy of the existing star sensor installation and adjustment methods, and provide a high-precision orthogonality adjustment system and adjustment method for the image plane of the star sensor
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[0039] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0040] If the detector image plane of the star sensor is tilted relative to the optical axis of the system, so that the pixels in the detector image plane are not on the same vertical focal plane, resulting in the image plane imaging showing a pre-focus and back-focus state, and the centroids at different fields of view Changes will affect the measurement accuracy of the star sensor, so it is very important to realize the orthogonal adjustment of the detector and the optical axis of the system. The invention provides a high-precision orthogonality adjustment system and adjustment method for the star sensor image plane, through which the system optical axis of the star sensor and the detector image plane can be adjusted for high-precision orthogonal alignment, and the quantization is achieved. Measure parameter indicator...
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The invention relates to a system and a method for realizing high-precision orthogonality adjustment of an image surface of a star sensor. The problems of low efficiency and low adjustment precision of the adjustment mode of the star sensor in the prior art are solved. The system comprises an illumination light source, a target test target component, a large-view-field collimator, a star sensor and a control processing module. The target test target component comprises a one-dimensional translation platform and a target test target arranged on the one-dimensional translation platform; the target test target is at least provided with a central star point, an upper star point, a lower star point, a left star point and a right star point, wherein the central star point is arranged in the center of the target test target, and the upper star point, the lower star point, the left star point and the right star point are uniformly distributed on the circumference which takes the central star point as the center of a circle; the illumination light source, the target test target component, the large-view-field collimator and the star sensor are arranged in sequence; and the control processing module is respectively connected with the one-dimensional translation platform, an installation adjusting frame and the star sensor. Meanwhile, the invention also provides a method for realizing high-precision orthogonality adjustment of the image surface of the star sensor.
Description
technical field [0001] The invention relates to the field of optical assembly, in particular to a high-precision orthogonality adjustment system and adjustment method for an image plane of a star sensor. Background technique [0002] The star sensor is currently the most accurate attitude measurement sensor, and has a wide range of applications in space positioning and remote sensing mapping. The star sensor has the characteristics of short focal length, large field of view, high precision and wide application. The star sensor is mainly composed of an optical lens and a detector. The assembly and adjustment of the whole machine needs to adjust the optical axis of the optical lens to be perpendicular to the detector to ensure the high-precision coincidence of the optical image plane and the detector image plane. [0003] The traditional adjustment method is to push-broom the off-axis field of view of the optical system through a collimator and a turntable, and adjust the con...
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IPC IPC(8): G02B27/62
Inventor 张学敏吕进剑康晓鹏闫晓军杜伟峰陆建
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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