No-scanning three-dimensional laser detection device received by array transmitting unit and method

Abstract

The invention discloses a no-scanning three-dimensional laser detection device received by an array transmitting unit and a method. The device comprises a two-dimensional array laser source, a unit laser detector, a system controller, a modulator and a demodulator. The method includes the following steps that the system controller controls the modulator to generate a laser pulse driving sequence and to send the laser pulse driving sequence to the two-dimensional array laser source and the demodulator, and the two-dimensional array laser source is driven by the modulator to generate corresponding modulating laser pulses and the modulating laser pulses irradiate a target area; the unit laser detector receives laser pulse echoes reflected from the target area, converts the laser pulse echoes and generates an electrical signal pulse sequence, the demodulator demodulates, recognizes and processes the electrical signal pulse sequence generated by the unit laser detector, and then outputs the electrical signal pulse sequence to the system controller, and the system controller controls an output distance numerical matrix. By means of the device and the method, complexity of detection elements is simplified, and achieving of laser detection distance range extending and long-distance non-scanning laser radar is facilitated.

Description

technical field [0001] The invention relates to a non-scanning three-dimensional laser detection device and method, in particular to a non-scanning three-dimensional laser detection device and method received by an array emitting unit, belonging to the technical field of laser detection. Background technique [0002] Laser detection technology uses laser as the irradiation source to measure physical quantities such as the amplitude and phase of the reflected laser light from the measured target to obtain information such as the orientation and speed of the measured target. Compared with traditional microwave detection technology, it has higher lateral resolution and Longitudinal resolution, less susceptible to interference due to smaller beamwidth, and better detection performance. In recent years, the narrow beam characteristics of laser detection have been further explored and used as various laser radars, especially high-precision three-dimensional imaging laser radars, f...

AI Technical Summary

Problems solved by technology

However, compared with narrow-beam and high-energy pulse laser sources, wide-beam and high-energy pulse laser sources are more difficult to achieve in terms of beam quality and energy, and engineering implementation is more difficult; similarly, compared with unit laser detection devices, The array detection element has short action distance, low signal-to-noise ratio, difficult manufacture, and high engineering cost

Existing non-scanning 3D laser detection technology also faces various challenges

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