Device and method for multi-target pulsed laser rangefinder on different lines of sight

Abstract

The invention relates to a multi-target pulse laser ranging device and method for different aiming lines. The device comprises a laser emitting and receiving assembly, an optical assembly and an electronic assembly; the optical assembly comprises an object lens, a beam splitter prism, a micro lens array and a charge coupled device; the beam splitter prism is used for reflecting laser echo emitted from the object lens to a photoelectric receiving tube, and other emitted lights pass through the beam splitter prism to reach the micro lens array; the micro lens array is used for acquiring target light field data and then projecting to the charge coupled device to convert into a digital signal as well as transmitting to the electronic assembly; the electronic assembly is used for calculating and outputting a target image and the corresponding target distance according to a read laser echo pulse signal and the target light field data; other target images and target distance on different aiming lines within the view field range are respectively outputted by the light field digital re-focusing technology. With the adoption of the device, the times of laser emission can be obviously reduced; the service life of a laser can be prolonged; in addition, the ranging efficiency can be effectively increased.

Description

technical field [0001] The invention relates to a multi-target pulse laser ranging device and method on different lines of sight, belonging to the field of pulse laser ranging. Background technique [0002] Laser ranging has high precision, fast speed, and long range, and the ranging accuracy has nothing to do with the measurement distance, so it is widely used in engineering and military fields. The transmitting system of the pulsed laser range finder sends a laser pulse to the target, and the echo pulse reflected by the target enters the receiving system, and the counting system of the laser range finder measures the time for the laser pulse to travel back and forth on the distance to be measured, which can be determined The distance to the target. In order to eliminate the interference of ground objects and trees in the same direction, the laser rangefinder adds a distance gating circuit. Using range gating technology, multi-target ranging can be realized, but multiple ...

AI Technical Summary

Problems solved by technology

Simultaneously measure the range of multiple targets that are not on the same line of sight and have a certain three-dimensional depth. At present, there is no method and device that can solve the problem.

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