激光接收装置、激光接收方法和激光雷达

文档序号:1926597 发布日期:2021-12-03 浏览:21次 >En<

阅读说明:本技术 激光接收装置、激光接收方法和激光雷达 (Laser receiving device, laser receiving method and laser radar ) 是由 马丁昽 刘迎春 于 2020-03-10 设计创作,主要内容包括:一种激光接收装置、方法和激光雷达,属于光电探测领域。该接收装置包括:接收物镜(10)、空间滤波器(11)、光波导匀光器(13)、光谱滤波器(12)和光电探测器(14),空间滤波器(11)对来自接收物镜(10)的回波光信号进行空间滤波,保留预设视场内的回波光信号,可以增加激光接收装置的信噪比;光波导匀光器(13)将空间滤波处理后的回波光信号进行匀光处理,实现将回波光信号均匀照射在光电探测器(14)上,光斑的能量均匀的分布在光电探测器(14)的各个像素上,使光电探测器(14)具有更低的虚警率;光谱滤波器(12)对回波光信号进行带通滤波,保留预设频段内的回波光信号,可以进一步提高激光接收装置的信噪比,提高光电探测器(14)的准确度,减小噪声光信号对光电探测器(14)的干扰。(A laser receiving device, a laser receiving method and a laser radar belong to the field of photoelectric detection. The receiving apparatus includes: the device comprises a receiving objective lens (10), a spatial filter (11), an optical waveguide light equalizer (13), a spectral filter (12) and a photoelectric detector (14), wherein the spatial filter (11) performs spatial filtering on an echo light signal from the receiving objective lens (10), the echo light signal in a preset field of view is reserved, and the signal-to-noise ratio of the laser receiving device can be increased; the optical waveguide light equalizer (13) performs light equalizing processing on the echo light signals after the spatial filtering processing to realize that the echo light signals are uniformly irradiated on the photoelectric detector (14), and the energy of light spots is uniformly distributed on each pixel of the photoelectric detector (14), so that the photoelectric detector (14) has lower false alarm rate; the spectral filter (12) performs band-pass filtering on the echo optical signals, reserves the echo optical signals in a preset frequency band, can further improve the signal-to-noise ratio of the laser receiving device, improves the accuracy of the photoelectric detector (14), and reduces the interference of the noise optical signals on the photoelectric detector (14).)

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