The fast tuning device need not to move the grating or any mechanical device so it is easy to keep stable and laid good foundation for a single laser as light source of DIAL .

该方案不用 转动光栅或者其他机械装置，易于保持系统稳定，为使用单台激光器作为 差 分 吸收 雷达的光源打下了基础。