Jitter elimination method for moving target gating detection imaging based on CCD external trigger

An external trigger and moving target technology, applied in image communication, color TV parts, TV system parts, etc., can solve the problems of inconsistent number of sub-frames, CCD imaging jitter, large energy fluctuations, etc., and achieve timing control accuracy High, eliminate imaging jitter, good stability

Active Publication Date: 2013-04-17
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

The timing of the pulsed laser, the gated image intensifier and the CCD must be synchronized, otherwise the number of subframes in each frame of the CCD is inconsistent, and the base number of subframes in each frame of the CCD is small, and the energy received by the CCD in each frame fluctuates greatly, which will cause Causes jitter in CCD imaging

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  • Jitter elimination method for moving target gating detection imaging based on CCD external trigger
  • Jitter elimination method for moving target gating detection imaging based on CCD external trigger
  • Jitter elimination method for moving target gating detection imaging based on CCD external trigger

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[0027] 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.

[0028] Descriptions of structural embodiments and methods of the invention are disclosed herein. It will be appreciated that the intention is not to limit the invention to the particular disclosed embodiments, but that the invention can be practiced using other features, elements, methods and embodiments. Similar elements in different embodiments are generally labeled with similar numbers.

[0029] The debounce method of the moving target gating detection imaging based on the CCD external trigger provided by the present invention is applied to the moving target gating detection, the method adopts the control mode of the external triggering to the CCD, and generates the gating image intensifier control signal I_trigger thr...

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Abstract

The invention discloses a jitter elimination method for moving target gating detection imaging based on CCD external trigger, which is used in moving target gating detection. In the method, an external trigger control mode is used for a CCD, three paths of time sequence control signals including a gating image intensifier control signal I-trigger, a pulsed laser control signal L-trigger and a CCDcontrol signal C-trigger are generated through a counter, and a gating image intensifier and a pulsed laser are synchronized with a CCD work time sequence of the CCD, so that times of gating a shutter release by an ICCD within each frame of exposure time of the CCD is equal, and the number of sub-frames of each frame of the CCD is accordant, in this way, energy received by each frame of the CCD is accordant, and imaging jitter of the CCD is eliminated.

Description

technical field [0001] The present invention relates to the technical field of gating detection of moving targets, in particular to a debounce method for gating detection imaging of moving targets based on CCD external trigger. Background technique [0002] Moving target detection generally uses a high-speed camera to obtain the instantaneous motion information of the target by increasing the frame rate of the imaging device (CCD or CMOS), but the amount of image data is large, the follow-up processing is complicated, and only the intensity information of the target can be obtained during the imaging process. Spatial information needs to be obtained by inversion of two-dimensional intensity information. [0003] The gating detection technology of moving targets uses a gating-enhanced CCD to detect the target. During the exposure time of each frame of the CCD, the electronic shutter of the gating image intensifier is switched on and off multiple times to form multiple sub-fra...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
Inventor 杨金宝王新伟周燕
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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