Electronic shutter based underground distance gated imaging method

Abstract

The invention discloses an electronic shutter based underground distance gated imaging method, belonging to the field of photoelectronic imaging and comprising an overwater control terminal, a pulse illumination device, a gated controller and a gated imaging detector, wherein the gated controller consists of a central control circuit module, a time delay circuit module and an electronic shutter module. The central control circuit module is used for receiving a setting instruction for corresponding processing; the time delay circuit is used for controlling the delay time of the gated imaging detector; the electronic shutter module is used for controlling the starting time of the gated imaging detector; and the gated imaging detector receives a reflecting light generation image signal of a target to finish the imaging of the target during starting to realize the underwater detection. According to the invention, the work threshold width of the gated imaging detector can be controlled by adopting the electronic shutter and is wider, so that the imaging field depth is wider in comparison with the traditional method; meanwhile, the invention simplifies the time delay circuit design and the delay precision control and reduces the complexity and the cost for the hardware design.

Description

technical field [0001] The invention relates to an electronic shutter-based underwater range-gate imaging method, which belongs to the field of photoelectric imaging. Background technique [0002] Photoelectric imaging detection technology, as one of the rapidly developing underwater imaging detection methods, has the characteristics of high imaging resolution and natural and intuitive images. However, due to the strong attenuation of light radiation by the water body, the illuminance of the underwater environment at a certain depth is extremely low. Therefore, the underwater photoelectric imaging technology based on active lighting has become the main mode of deep water (or deep sea) photoelectric imaging detection. Due to the absorption and scattering of the illumination beam by the water body and impurities in it, the back and forward scattered light of the water body in the transmission path will rapidly reduce the imaging contrast and resolution of the system after ent...

AI Technical Summary

Problems solved by technology

Based on the above ideas, the present invention proposes an electronic shutter-based underwater range-gated imaging method, which can solve the problem of narrow depth of field in traditional underwater range-gated imaging techniques

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