激光测向技术是利用光电探测器接收激光信号, 根据探测器光敏面对目标像光斑中心位置的偏差, 解算出角度偏差量, 进而得到目标的方位信息。激光测向技术具有测向范围大、电路设计灵活、测向精度高等特点, 因而得到广泛的应用。光电探测器件是激光测向技术的核心器件, 介绍了三种主要的探测器件, 论述了它们的工作原理和特点, 通过比较得出QD具有更多优点, 是较为理想的精密测向器件, 更适合于高精度动态目标的跟踪测量。

The laser direction finding technology uses the photoelectric detector to receive the laser signal, and calculates the angular deviation according to the deviation from the detector photosensitive surface to the spot center of the target, and then obtains the azimuth information of the target. Laser direction finding technology is widely used because of its large range of direction finding, flexible design of circuit and high precision of direction finding. The photoelectric detection device is the core device of laser direction finding technology, three main detection devices are introduced, the working principle and characteristics are discussed. The quadrant detector (QD) has more advantages through comparison, which is an ideal precision direction finding device, and is more suitable for tracking and measuring of high precision dynamic targets.