Study on coaxial control technology of parabolic mirrors
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1.
College of Optoelectronic Science and Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
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Corresponding author:
CHEN Pei-feng, pfchen@mail.hust.edu.cn
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Received Date:
2008-05-12
Accepted Date:
2008-07-01
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Abstract
In order to monitor and test the setting up angle of the parabolic mirror of the infrared tracking system of the missile seeker in the assembly process,a new approach was brought up,in which a CCD(charge coupled device) was used to receive the focusing spot of the parabolic mirror of the infrared tracking system of the focusing spot while rotating the parabolic mirror.The track of the center of gravity of the spot was fitted with the least square method,so the eccentric angle between the optical axis of the parabolic mirror and the structural central axis could be found.The method was analyzed in theory and proved in experiments.Different from the traditional transparent focusing system,the eccentric angle of the ring parabolic mirror was proportional to the radius R of the track circle of the center of gravity of the focusing spot with a coefficient of 1.13.The experimental results indicate that the system meets the need to monitor and test the setting up angle of the parabolic mirror.
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