Longitudinal scanning and synthesizing method for large-area array range-gated laser imaging

Abstract

The invention discloses a longitudinal scanning and synthesizing method for large-area array range-gated laser imaging. The longitudinal scanning and synthesizing method for the large-area array range-gated laser imaging comprises the following steps: automatically setting the divergence angle of pulse laser and the gating range of a large-area array COMS imager by using a controller, and beginning scanning imaging from the nearest initial target object till the farthest target object by gradually increasing the imaging distance; in each scanning imaging step, synchronously synthesizing acquired gated images by a processor in the large-area array COMS imager so as to obtain a synthetic image capable of displaying far and near target objects simultaneously within the shortest time. According to the longitudinal scanning and synthesizing method for the large-area array range-gated laser imaging, through intelligent control, the divergence angle of the pulse laser and the gating range of the imager are automatically set by a program; in the imaging process, the images are synthesized synchronously, so that the image capable of displaying the far and near target objects simultaneously can be obtained within the shortest time.

Description

technical field [0001] The invention belongs to the technical field of laser imaging, and in particular relates to a longitudinal scanning synthesis method of a large area array range gate laser imaging. Background technique [0002] Laser distance gating technology uses pulsed lasers and CMOS gating imagers to distinguish between scattered light and target reflected light at different distances in the order of laser reflection back, so that the reflected light of the target is just within the gating time of the imager. The inside reaches the imager and is collected and imaged by CMOS. [0003] The specific imaging method is attached Figure 1-2 shown. [0004] First, the controller instructs the laser to emit short high-energy pulses in the direction of the target. When the laser pulse encounters particles or obstacles during its travel, it will reflect back, just before the laser echo reflected by the target object reaches the imager. , the control system closes the gate...

AI Technical Summary

Problems solved by technology

[0006] In addition, because the existing large area array laser range gating technology can only manually set different gating distances and laser divergence angles, and when imaging targets with different distances in one direction, the images obtained are also independent of each other. , the user cannot clearly observe all targets in one direction in a very short time

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