The embodiment of the invention provides a laser radar and an intelligent vehicle, and can be specifically applied to the field of intelligent vehicles, and the laser radar can comprise the steps that a laser generates a laser signal; the beam shaping module carries out collimation processing on the laser signal; the beam splitting module performs beam splitting processing on the laser signal to obtain a detection signal and a local oscillator signal; the receiving module receives the echo information and transmits an echo signal to the optical frequency mixing module; the optical frequency mixing module performs frequency mixing processing on the local oscillator signal and the echo information to obtain a first beat frequency signal and a second beat frequency signal; the differential receiving unit performs differential receiving on the first beat frequency signal and the second beat frequency signal; the first beat frequency signal and the second beat frequency signal are used for determining at least one of the distance or the speed of the target object. According to the embodiment of the invention, signals can be transmitted through a spatial light path, the receiving aperture is enlarged according to actual requirements, and the received echo signals are increased.
本申请实施例提供一种激光雷达和智能车辆,具体可以应用于智能车辆领域,其中,一种激光雷达可包括:激光器产生激光信号;光束整形模块对激光信号进行准直处理;分束模块对激光信号进行分束处理,得到探测信号和本振信号;接收模块接收回波信息并将回波信号传输至光学混频模块;光学混频模块对本振信号和回波信息进行混频处理得到第一拍频信号和第二拍频信号;差分接收单元对第一拍频信号和第二拍频信号进行差分接收;第一拍频信号和第二拍频信用于确定目标物体的距离或速度中的至少一项。采用本申请实施例可以通过空间光路来传输信号,根据实际需求扩大接收口径,增加接收到的回波信号。
Laser radar and intelligent vehicle
一种激光雷达和智能车辆
29.07.2022
Patent
Elektronische Ressource
Chinesisch
A Fusion Navigation of Double Laser Radar for Intelligent Vehicle
Trans Tech Publications | 2011
|Laser radar cleaning device, laser radar system and vehicle
Europäisches Patentamt | 2023
|Intelligent vehicle obstacle avoidance and emergency braking system based on laser radar
Europäisches Patentamt | 2022
|