测云激光雷达具有精度高和稳定性好的特点,是检测云高的有效途径。作为激光雷达系统的一个基本组成部分,脉冲二极管激光器(PLD)需要脉冲信号触发。对激光雷达的发射部分进行了研究,其中包括后向散射信噪比的仿真、脉冲二极管激光器的选择与触发电路、用于驱动综合光学系统的波长为905 nm的PLD的电路。触发电路激光脉冲具有可调功率和脉冲宽度功能。用Systemview软件仿真设计,完成了PCB版的制作。结果表明:脉冲的任何参数即触发脉冲宽度、上升沿、抖动等均可用于实验中,并具有低成本和使用方便的优点。该发光模块在测云激光雷达中运行良好。 Measuring cloud lidar with high precision and good stability characteristics, is an effective way to detect cloud height. As an essential part of the lidar system, pulsed diode lasers (PLDs) require pulsed signal triggering. The launch of the lidar was studied, including the simulation of backscatter signal-to-noise ratio, the selection and triggering of pulsed diode lasers, and the circuit used to drive a PLD at 905 nm for an integrated optical system. Trigger circuit Laser pulse with adjustable power and pulse width function. With Systemview software simulation design, completed the PCB version of the production. The results show that any parameters of pulse, such as triggering pulse width, rising edge, jitter and so on, can be used in experiments with the advantages of low cost and easy to use. The luminescence module works well in cloud-lidar.