Real-time closed-loop tracking method based on rotary double prisms

A closed-loop tracking and double-prism technology, which is applied in the direction of control using feedback, can solve the problem that the device and method are not suitable for target tracking, and achieve the effects of optimized rotation mode, smooth tracking process and high tracking accuracy.

Active Publication Date: 2017-06-06
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In the prior art (referring to the patents of Yun Maojin, Zu Jifeng, etc.: CN1256609C and patent: CN2655268), it is proposed to use this structure for beam scanning, and the scanning device and scanning algorithm based on the rotating double prism have been studied, but the provided Apparatus and method not suitable for object tracking

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  • Real-time closed-loop tracking method based on rotary double prisms
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  • Real-time closed-loop tracking method based on rotary double prisms

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0031] combine first figure 1 A tracking device based on a rotating binocular prism is introduced. The main components of the target tracking device are the first prism 1, the second prism 2, the first motor 3, the second motor 4, the first position sensor 5, the second position sensor 6, the detector 7, and the controller 8.

[0032] Wherein the vertex angle of the first prism 1 and the second prism 2 is 7.5°, and the refractive index is 1.5;

[0033] The first motor 3 and the second motor 4 are ring-shaped torque motors, and the rotors of the two are directly connected to the first prism and the second prism respectively, which saves the intermediate transmission link and has the characteristics of fast response and h...

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Abstract

The invention discloses a real-time closed-loop tracking method based on rotary double prisms. The method solves a nonlinear and strong coupling relation among miss distance, a target position and a prism rotation angle through a decoupling algorithm. The miss distance fed back by a detector is utilized to control the prisms to rotate, so that target imaging is always in the center of a field of view of the detector. The method can overcome a parameter error of a prism system, and is relatively high in tracking precision; and through the decoupling algorithm, the rotation mode of the prisms is optimized, repeated rotation is not needed, and a tracking process is relatively smooth and rapid.

Description

technical field [0001] The invention belongs to the field of photoelectric tracking, and relates to a real-time closed-loop tracking method based on a rotating double prism. Background technique [0002] The photoelectric capture tracking and aiming system uses light waves as the information carrier, has extremely high resolution in the time domain, space domain, and frequency domain, and has strong anti-electromagnetic interference capabilities. Fields such as fire control aiming have increasingly wide applications. [0003] At present, traditional mechanical scanning devices such as gimbals and mirrors are generally used in photoelectric capture tracking and aiming systems. The gimbal can rotate at a large angle, but has a large volume and poor dynamic response capability; the mirror has a fast response speed and high precision, but has a small deflection angle and is more sensitive to mechanical errors. [0004] Based on the beam control mechanism of the rotating double...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12
CPCG05D3/12
Inventor 李锦英陈科张涯辉彭起王中科付承毓
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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