Results 211 to 220 of about 2,465,580 (245)

AI-driven quadruped robots: from fundamental locomotion to advanced biomimetic behaviors. [PDF]

Front Neurorobot
Wu L, Chow CO, Wong WR, Chuah JH, Kanesan J, Zhang M.   +5 more
europepmc   +1 more source

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Differential Absorption Lidar Transmitter Based on an Indium Phosphide Photonic Integrated Circuit for Carbon Dioxide Sensing

IEEE Journal of Selected Topics in Quantum Electronics, 2022
We demonstrate carbon dioxide sensing using a random-modulation continuous-wave differential absorption lidar transmitter based on an indium phosphide photonic integrated circuit.
A. Pérez-Serrano, C. Quevedo-Galán, Victor Ricardo Aguilera-Sanchez, J. Tijero, I. Esquivias   +4 more
semanticscholar   +1 more source

Potential of Ground-Based Multiwavelength Differential Absorption LiDAR to Measure δ¹³C in Open Detected Path

IEEE Geoscience and Remote Sensing Letters, 2022
A novel framework was proposed to measure atmospheric concentration of $\delta ^{13}C$ using a multiwavelength integrated path differential absorption (IPDA) LiDAR.
Tianqi Shi, Ge Han, Xin Ma, W. Gong, Zhipeng Pei, Hao Xu, Ruonan Qiu, Hao-Wei Zhang, Jia-Xing Zhang   +8 more
semanticscholar   +1 more source

Dual-wavelength locking technique for coherent 2-µm differential absorption lidar applications.

Applied Optics, 2021
A dual-wavelength locking technique for coherent 2-µm differential absorption lidar (DIAL) applications has been developed for simultaneously measuring water vapor (${{\rm{H}}_2}{\rm{O}}$) and radial wind velocity profiles.
Makoto Aoki, H. Iwai
semanticscholar   +1 more source

Real-time tracing VOCs, O3 and PM2.5 emission sources with vehicle-mounted proton transfer reaction mass spectrometry combined differential absorption lidar

, 2021
Owing to rapid economic development and urbanization, environmental problems caused by PM2.5 and O3 have been occurring frequently. Volatile organic compounds (VOCs) are significant precursors of O3 and secondary organic aerosols that contribute to PM2.5.
Yuefeng Zhao, Jing Gao, Yangjian Cai, Jingjing Wang, Jie Pan   +4 more
semanticscholar   +1 more source

Concentration monitoring of volatile organic compounds and ozone in Xi'an based on PTR-TOF-MS and differential absorption lidar

, 2021
Ozone has become a severe ambient pollutant. As the critical precursors of the formation of ozone, volatile organic compounds (VOCs) can adversely affect the atmospheric environment.
Xu Wang, Yangjian Cai, Jingjng Wang, Yuefeng Zhao   +3 more
semanticscholar   +1 more source

Mobile 3.4–μm differential absorption lidar system for remote sensing of the atmospheric methane

Atmospheric and Ocean Optics, 2021
The calibration of a mobile IR laser source of a DIAL system near ~ 3400 nm for the study of methane in the atmosphere has been carried out. The technical characteristics of the IR lidar have been determined.
O. Romanovskii, S. Sadovnikov, S. Yakovlev, Dmitry A. Tuzhilkin, O. Kharchenko, N. S. Kravtsova   +5 more
semanticscholar   +1 more source

Mobile ground-based differential absorption lidar systems for atmospheric greenhouse gas sensing: a review

Applied spectroscopy reviews (Softcover ed.)
The level of greenhouse gases increasing due to natural and anthropogenic processes is considered to be a key factor of climate change and global warming.
O. Romanovskii, Yury V. Kistenev, S. Yakovlev, A. Nevzorov, A. V. Nevzorov, S. Sadovnikov, O. Kharchenko   +6 more
semanticscholar   +1 more source

1.645 µm Er:YAG single-mode dual-wavelength emitter for CH4 differential absorption lidar.

Optics Letters
We present a hybrid fiber/bulk laser source at 1.645 µm designed for methane (CH4) monitoring using differential absorption lidar (DIAL) measurements in the atmosphere. The emitter is also suited for coherent wind Doppler lidar. It relies on a Q-switched
D. Edouart, F. Gibert, C. Cénac
semanticscholar   +1 more source

Ozone differential absorption lidar algorithm intercomparison

Applied Optics, 1999
An intercomparison of ozone differential absorption lidar algorithms was performed in 1996within the framework of the Network for the Detection of Stratospheric Changes (NDSC) lidarworking group.
Peter von der Gathen, Daan Swart, Hideaki Nakane   +2 more
exaly   +2 more sources