Ziqi Peng   Hongzi Bai   Tatsuo Shiina   Jianglong Deng   Bei Liu   Xian Zhang   
Information 13(12) 558-558 2022年11月 [査読有り]
LED (light-emitting diode)-lidar (light detection and ranging) has gradually been focused on by researchers because of its characteristics of low power, high stability, and safety to human eyes. However, LED-lidar systems are easily disturbed by b...
When the conventional optical coherence tomography (OCT) measures the transmittance and the absorbance of the target in the scattering media, its image is affected by the scattering media and gets a modulated target profile. Due to the influence o...
The propagation methods of a non-diffractive beam (NDB) for optical sensing in scattering media have been extensively studied. However, those methods can realize the high resolution and long depth of focus in the viewpoint of microscopic imaging. ...
Maria Cecilia Dandan Galvez   Robelyn de Lara   Paulito Mandia   Edgar Vallar   Ernest Macalalad   Tatsuo Shiina   
ECS Transactions 107(1) 2243-2253 2022年4月 [査読有り]
A non-invasive and simple point measurement using a portable TD-OCT system was used to measure the leaf structure and attenuation coefficient of healthy and unhealthy leaves of a Citrofortunella Microcarpa plant. Assuming homogeneity within the la...
Jumar G. Cadondon   Prane Mariel B. Ong   Edgar A. Vallar   Tatsuo Shiina   Maria Cecilia D. Galvez   
Sensors 22(8) 2940-2940 2022年4月 [査読有り]
Chlorophyll-a measurement is important in algal growth and water quality monitoring in natural waters. A portable pulsed LED fluorescence lidar system based on the preliminary algal organic matter and pigments excitation–emission matrix (EEM) of c...
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...