The assembly positioning state of the imaging detector has an important influence on the performance of the photoelectric reconnaissance system. The axial positioning accuracy of the imaging detector will affect the imaging clarity and resolution, and the radial positioning accuracy will affect the optical axis consistency of the optical path system. The tilt, translation, rotation and position of the detector will bring multi-dimensional errors during the installation of the imaging detector, resulting in image plane misalignment, image blur and optical axis offset. In this paper, an optical measurement system is designed and built, which can automatically distinguish the installation error of the imaging detector and assist the installation of the imaging detector. The translation installation error is less than 0.015mm, and the rotation deflection error is less than 0.015 ', and the installation qualification can be given according to the clarity of the observation system image.
Photoelectric stabilization platform is the eye of the aircraft.At present, the two-axis two-gimbal photoelectric platform is widely used in military, commercial and scientific applications due to simple mechanism, low cost and small size. However, the stability performance of the outer gimbal will be reduced at large pitching angle. In this paper the reason was analyzed , the three-axis gyro system was proposed to stabilize the outer gimbal and the mechanism of this method was explained ,then the control system was designed, the outputs of speed loop were compared between the three-axis gyro and the traditional two-axis gyro system, The results showed three-axis gyro system has higher stabilization accuracy than two-axis gyro system.
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