In this work, we propose a low-coherence Doppler lidar (LCDL) to measure particle velocity at near-surface atmosphere. To measure particle velocity information at near-surface atmosphere, it is necessary to conduct the measurement at high frequenc...
The optical measurement algorithm for the real front and back surfaces of contact lenses from their center to periphery accurately and simultaneously is proposed. It is an algorithm that makes light incident vertically along the curved surfaces of...
Aerosol optical properties are measured near the surface level using sampling instruments and a near-horizontal lidar. The values of the aerosol extinction coefficient inside the instruments are derived from nephelometer and aethalometer data, whi...
Laser beam propagation in highly random media can potentially be applied to various optical studies, though the light penetration is often limited to the surface or skin regions of the targets. In free space, it is known that the use of a non-diff...
29TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 29) 237 2020年
The LED mini lidar was improved to monitor Raman scattering echoes. The Raman scattering signal indicates a certain gas concentration and it can distinguish the target from the other materials. It is so weak, 1/1000 of Mie scattering echoes, but e...
Prane Mariel Ong   Nofel Lagrosas   Tatsuo Shiina   Hiroaki Kuze   
29TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 29) 237 2020年
The combined use of remote sensing and in-situ monitoring instruments could help improve the assessment of near-surface aerosol properties. In this paper, we analyze the diurnal behavior of aerosol extinction coefficients, alpha(Ext)(lambda), at l...
Prane Mariel B. Ong   Tatsuo Shiina   Naohiro Manago   Hiroaki Kuze   Hiroki Senshu   Naohito Otobe   George Hashimoto   Yasuhiro Kawabata   
EPJ Web of Conferences 176 2018年4月 [査読有り]
A compact LED lidar was constructed and fieldtested with the aim to observe the Mars' dust devils. To be able to fit it on the Mars rover, a specialized Cassegrain telescope was designed to be within a 10 cm-cube, with a field of view of 3mrad. Th...