基于边缘探测技术的激光雷达系统中, 确定分子吸收池滤波器的吸收光谱谱线, 以及确定发射激光信号的中心频率, 是实现激光雷达系统设计的核心问题。依据不同信道中布里渊散射的特性, 仿真出碘分子吸收池在470～550 nm区间的吸收光谱, 在此基础上确定激光雷达系统激光中心频率的选取和鉴频器的设计方法。以大气和海水典型信道为例, 论证了该方法在基于边缘探测技术的激光雷达中的实际应用。

In lidar system basing on the brim detecting technology, it is crucial to determine the absorption spectral profiles of molecule absorption cell filter and the center frequency of emission laser signal in design of lidar system. According to the features of Brillouin scattering in different channel, the absorption spectra of molecule iodine absorption cell ranging from 470 nm to 550 nm are emulated in this paper. The center frequency of emission laser signal was further chosen and the frequency discriminator was designed. The lidar system can operate over both representative atmospheric and underwater channels. The method can be used as the guideline of practical lidar system design and application.