抄録
LED mini lidar was developed for surface atmosphere observation. The lidar is equipped with a high
speed photon counter of which data sampling interval is 1 ns, corresponding to a range bin of 0.15 m,
and a high repetition pulsed LED beam of which repetition frequency is greater than 500 kHz.
Transmitting pulse power was <10 nJ/10 ns (= 1 W). For summation time greater than 0.2 s, surface atmosphere
activity could be visualized. In this study, concentration change in the order of seconds was
visualized with this high resolution. Furthermore, the quantitative measurement method to distinguish
dust samples in relation to Zirconia beads measurements is proposed. The ratio between weight and
scattering cross section of suspended dusts is obtained and the suspension characteristics of such dusts
are discussed with the results.
