A time-correlated single photon counting wake detection device and its operating method

Abstract

The invention discloses a time-correlated single photon counting wake detection device and an operation method thereof, belonging to the field of laser underwater wake target detection. It includes a laser emitting component, a laser receiving component and an information processing component. Both the laser emitting component and the laser receiving component are electrically connected to the information processing component. The component transmits the start electrical signal; the laser receiving component is used to receive the reflected light reflected by the bubbles in the wake, and transmits the termination electrical signal to the information processing component synchronously; the information processing component is used to receive the light from the laser emitting component The start electrical signal and the termination electrical signal from the laser receiving component complete the measurement of the photon flight time interval and the analysis of the time-correlated single photon counter, and finally calculate the target distance. The invention can realize the detection of underwater weak wake echo signals, and overcomes the technical limitation of low sensitivity existing in the traditional technology.

Description

technical field [0001] The invention relates to a time-correlated single photon counting wake detection device and an operating method thereof, belonging to the field of laser underwater wake target detection. Background technique [0002] During the voyage, due to the cavitation of the propellers of ships or submarines, the breaking of sea waves and the involvement of air near the waterline will form a wake field containing a large number of bubbles, especially microbubbles. The geometric size of the wake field It is more than 2 times larger than the flying body itself. Due to the long survival time and unavoidable characteristics of ship wakes, the detection of wake bubbles can realize the detection of ships and submarines. [0003] The main reason why the research on wake bubbles has been paid more and more attention by various countries is that it has great application value for military attack and defense and civilian use. At present, the wake characteristics are mainl...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to propose a time-correlated single-photon counting wake detection device and its operating method to solve the problem that the existing solutions cannot meet the distance detection requirements of underwater long-distance weak bubbles

Images