Laser radar orthogonal receiving and transmitting array

Abstract

The invention provides a laser radar orthogonal receiving and transmitting array. The laser radar orthogonal receiving and transmitting array comprises a transmitting unit and a receiving unit, wherein the transmitting unit transmits light wave signals in a specific far-field radiation pattern along a first direction, and scans along a second direction; the receiving unit receives an optical detection signal which is transmitted by the transmitting unit and is reflected by an object to be detected along the second direction, and scans along the first direction; the first direction is perpendicular to the second direction. The laser radar orthogonal receiving and transmitting array is based on the quadrature receiving and transmitting principle, the number of needed phase shifters can be reduced to a great extent, the production cost is reduced, the integration level can be improved, and the control difficulty of the laser radar quadrature receiving and transmitting array can be reduced.

Description

technical field [0001] The invention relates to the technical field of laser radar, and more specifically, to a laser radar orthogonal transceiver array. Background technique [0002] Lidar technology is widely used in fields such as ground exploration, archaeology, and autonomous driving. [0003] At present, lidar scanning technology can be roughly divided into two categories: mechanical scanning and solid-state scanning. Traditional mechanical scanning is expensive and not conducive to mass production; the existing LiDAR solid-state two-dimensional scanning requires an N×N phase shifter array, and with the improvement of measurement accuracy and area, the number of phase shifters will be significantly increased. Increase, will cause difficulties in manufacturing and signal configuration. [0004] Then, how to provide a novel lidar scanning technology to overcome the problems existing in the prior art is a technical problem to be solved urgently by those skilled in the a...

AI Technical Summary

Problems solved by technology

Traditional mechanical scanning is expensive and not conducive to mass production; the existing LiDAR solid-state two-dimensional scanning requires an N×N phase shifter array, and with the improvement of measurement accuracy and area, the number of phase shifters will be significantly increased. increases, which can cause difficulties in manufacturing and signal configuration

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