Star simulator calibration and self-collimation measuring system and method based on common light path
A star simulator and measurement system technology, applied in the field of optical axis self-collimation measurement system, can solve the problems of low installation efficiency and lower accuracy of installation error test, and achieve the effect of simplifying complexity and reducing cost
Active Publication Date: 2019-03-26
NANJING ZHONGKE ASTROMOMICAL INSTR
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Problems solved by technology
This method is restricted by equipment, standard parts, reference transmission error and manual operation, the accuracy of installation error test is reduced, and the installation efficiency is also low
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[0027] Attached below Figure 1-4 A specific embodiment of the present invention is further described in detail.
[0028] Such as image 3 As shown, a star simulator calibration and autocollimation measurement system based on a common optical path, one end of the star simulator 2 is provided with a star sensor fixing flange surface 1, and the other end is sequentially provided with a system mirror window 3, a star The optical system 4 and the beam splitter 5 of the simulator; a square prism 7 is installed on the fixed flange surface 1 of the star sensor, and a CCD system 9 is arranged below the beam splitter 5; the beam splitter 5 and the axis of the star simulator 2 have an angle of inclination , the light passing through the beam splitter 5 can be incident into the CCD system 9 and imaged in the CCD system 9 .
[0029] Such as figure 1 As shown, in the part of the optical path calibrated by the star simulator, the light emitted by the light source fills the entire optical...
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The invention provides a star simulator calibration and self-collimation measuring system and method based on a common light path. A star simulator and a star sensor are mounted at the set positions in a high-precision mode, and collimation of optical axes of the star sensor and the star simulator is achieved; a certain spacing is formed between an exit pupil of the star simulator and an optical lens system of the star simulator, the star simulator is designed on the basis of the characteristic, under the condition that the optical structure of the star simulator meets the collimation functionof the star simulator, a lens of the star simulator is larger than an entrance pupil of the star sensor, and when the whole optical lens system is filled with light rays, a part of the light rays areemitted into the star sensor in a collimation mode and serve as a calibration part of the star simulator; and the other part of the light rays irradiate to a fixed flange face of the star sensor in acollimation mode and serve as a self-collimation measuring light path of the star sensor and the star simulator, and thus the star simulator calibration function and the star sensor self-collimationmeasuring function are achieved under the condition of the common light path.
Description
technical field [0001] The invention belongs to the field of measuring the installation attitude of aerospace equipment, and in particular relates to the calibration of a star simulator and an optical axis self-collimation measurement system of a star sensor and a star simulator. Background technique [0002] As a high-precision and high-reliability attitude-sensitive measurement device, the star sensor has been widely used in current aerospace vehicles. The star sensor uses the law that the position of the star is basically immobile relative to the inertial space, obtains the star map by photoelectric imaging of the stars in a sky area, and then processes and recognizes the star map to obtain the measurement sensor optical axis pointing in the inertial space, passing through the star The three-axis attitude of the spacecraft can be obtained by converting the sensor between the spacecraft installation coordinate system and the spacecraft attitude coordinate system; compared ...
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IPC IPC(8): G01C25/00G01C1/00
CPCG01C1/00G01C25/00
Inventor 毕勇李金鹏潘森
Owner NANJING ZHONGKE ASTROMOMICAL INSTR