PHASED LIDAR Russian patent published in 2019 - IPC G01S17/88 

FIELD: physics.

SUBSTANCE: invention relates to control of laser radiation without movable parts with possibility of controlling direction, intensity, frequency and phase characteristics of light radiation and can be used in a number of special areas, in optical location, robotics systems control systems, automotive industry, aircraft engineering, drones, collision avoidance systems, cartography and navigation, space geodesy, machine vision systems, construction, mining, underwater vision systems, during atmosphere research, mine clearance and rescue of people at sea and on land. Disclosed phased lidar consists of an output optical system, a receiving optical-electronic path, a digital computer, an information consumer, a laser emitter containing a laser light source and a collimator. Also, the phased lidar includes a modulator, a laser emitter driver, a modulator control unit, a synchronization unit, wherein the laser emitter, the modulator and the output optical system are located on the same optical axis. Laser emitter comprises pulsed laser source and collimator located on one optical axis, and modulator comprises dielectric prism of total internal reflection, transparent electroconductive layer applied on hypotenuse face of dielectric prism of total internal reflection, gel-like transparent layer optically contacting with transparent electroconductive layer, double-layer structure located above gel-like transparent layer with gap. Two-layer structure contains series-arranged dielectric substrate and electrode system facing the gel-like transparent layer. System of electrodes comprises conducting matrix grid electrically connected to modulator control unit. Synchronization unit is electrically connected to the driver of the laser emitter and to the modulator control unit. Output optical system comprises, for example, adaptive reflective optics optically directed to the observation object, wherein the receiving opto-electronic path is optically directed to the observation object and comprises a lens, band-pass optical filter, photodetector element, matching electronic path, recording electronic circuit, wherein lens, band-pass optical filter and photodetector element are located on one optical axis, and the photodetector element is electrically connected to the matching electronic path, which is electrically connected to the recording electronic circuit. Recording electronic circuit is electrically connected to digital computer, wherein digital computer is electrically connected to laser emitter driver and synchronization unit, wherein recording electronic circuit comprises amplifier with controlled amplification factor, a first signal threshold processing circuit, a second signal threshold processing circuit, a response time logger, and a trigger threshold setting device.

EFFECT: technical result is wider scope of use, faster operation and improved quality of operation of system in complex jamming environment.

1 cl, 12 dwg