Real-time closed loop predictive tracking method of maneuvering target

A maneuvering target and target technology, applied in the field of closed-loop real-time adaptive processing of real-time prediction and real-time tracking, can solve the problem of not finding a tracking method, and achieve the effects of reliable prediction offset, reduced prediction error, and high control accuracy

Inactive Publication Date: 2011-06-15
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

To sum up, there is no good tracking method to achieve online real-time self-adaptive and continuous stability for small targets with maneuvering ability and fast movement speed.

Method used

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  • Real-time closed loop predictive tracking method of maneuvering target
  • Real-time closed loop predictive tracking method of maneuvering target

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Embodiment Construction

[0035] According to the real-time closed-loop predictive tracking method described in the manual, the realization of the platform such as figure 2 As shown, the platform is composed of five parts: imaging optical system 1, focal plane detector array 2, signal real-time processing and tracking servo control system 3, high-precision two-dimensional motion table 4, and overall head scanning mechanism 5. Among them: imaging optics System 1 uses an ordinary optical telescope, the main mirror diameter is 102mm, the focal length is 700mm, the F number is 7, the resolution is 1.16″, the instantaneous field of view of the system is 8urad, and the staring field of view is about 0.47°×0.6°; focal plane detector The array uses visible light area array CMOS devices with global shutter and windowing functions, the number of pixels is 1024×1280, the pixel size is 6.7um, the full-frame imaging frame rate is 27fps, and the maximum frame rate of windowed imaging 640×480 is 106fps, peak The respon...

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Abstract

The invention discloses a real-time closed loop predictive tracking method of a maneuvering target, which is a closed loop real-time self-adaptive processing method of on-line predictive immediate tracking in a maneuvering small target imaging tracking system and is mainly used for fields of photoelectric imaging tracking, robot vision, intelligent traffic control and the like. Due to the adoption of the method, a captured target can be extracted to to establish a flight track, the target flight track is filtered, the position of a target at a next collection time is predicted, a platform is processed in real time on line with high performance of a DSP main processor and a FPGA coprocessor, a prediction algorithm which can cope with target maneuver with higher accuracy is adopted to predict the motion state of the target in real time and a prediction result is utilized to drive a piezoelectric ceramic motor two-dimensional motion station to carry out overcompensation, thereby the self-adaptive predictive tracking is realized. The invention has the advantages that the method can overcome the defect of a largened tracking error caused by system delay and can still carry out continuous and stable tracking when the target maneuvers or is temporarily sheltered.

Description

Technical field [0001] The invention relates to a target photoelectric imaging tracking technology, in particular to a closed-loop real-time adaptive processing method for real-time prediction and real-time tracking of a mobile small target TV tracking system, which can be used for continuous and stable imaging tracking of distant mobile small targets. Background technique [0002] Achieving high-precision continuous and stable tracking is a hot issue in the application of maneuvering small target tracking. The tracking of this type of target usually has a long detection distance (several kilometers), uniform background, small undulations, and small target imaging size, which generally occupies a pixel area of ​​about 3×3. It has maneuverability and may be caused by humans. , Procedures and other factors produce maneuvering, and maneuvering strength can reach 2g or even higher. Traditional imaging tracking methods usually extract the target from the acquired current frame of ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 李丹丁雷赵佳周姗姗
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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