Optical characteristics of 265nm LED mini-lidar

LED mini-lidar has improved to observe the lower atmosphere and the surface atmosphere in daytime and nighttime with the same signal-to-noise ratio as the LED light source of DUV 265nm wavelength is installed. In this study, we discuss how small the optical power is required for the near range observation. The signal-to-noise ratio is controlled by the pulse repetition frequency and the accumulation time with the small transmitting optical power. As it is in solar blind area, it can be accomplished up to the detection limit of the lidar echo signal. We considered it experimentally and theoretically.