Results 81 to 90 of about 2,558,610 (193)

Clear air turbulence detection and characterisation in the delicat airborne lidar project [PDF]

, 2010
We report on a development of a long-range airborne UV high spectral resolution lidar, intended for the detection and characterisation of clear air turbulence (CAT).
Hervé Barny, Martin Wirth, Lombard, Laurent, Rees, David, Barny, Hervé, Gaudo, Thierry, Rempel, Dimitry, D. Rees, Gerhard Ehret, Rondeau, Philippe, Dolfi-Bouteyre, Agnès, Patrick Vrancken, Vrancken, Patrick, Laurent Lombard, David Rees, Agnes Dolfi-bouteyre, Thierry Gaudo, Dimitry Rempel, Ehret, Gerhard, Wirth, Martin   +19 more
core  

Observer Design for Vector Nonlinear Systems With Applications to Autonomous Vehicles and Robots

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper focuses on observer design for nonlinear systems involving functions of vector arguments. The output equations and the process dynamics are both composed of nonlinear functions of nonseparable multivariable states. The partial derivatives of the nonlinear functions are assumed to be bounded.
Gaurav Sharma, Ali Zemouche, Rajesh Rajamani   +2 more
wiley   +1 more source

Development of wavelength locking circuit for 1.53 micron water vapor monitoring coherent differential absorption LIDAR

EPJ Web of Conferences, 2018
We have studied a ground based coherent differential absorption LIDAR (DIAL) for vertical profiling of water vapor density using a 1.5μm laser wavelength. A coherent LIDAR has an advantage in daytime measurement compared with incoherent LIDAR because the
Imaki Masaharu, Kojima Ryota, Kameyama Shumpei   +2 more
doaj   +1 more source

Feasibility Study of Multi-Wavelength Differential Absorption LIDAR for CO2 Monitoring

Atmosphere, 2016
To obtain a better understanding of carbon cycle and accurate climate prediction models, highly accurate and temporal resolution observation of atmospheric CO2 is necessary. Differential absorption LIDAR (DIAL) remote sensing is a promising technology to
Chengzhi Xiang, Xin Ma, Ailin Liang, Ge Han, Wei Gong, Fa Yan   +5 more
doaj   +1 more source

First attempt to monitor atmospheric glyoxal using differential absorption lidar

, 2012
Glyoxal (CHOCHO), as an indicator of photochemical “hot spots”, was for the first time the subject of a differential absorption lidar (DIAL) campaign. The strongest absorption line of glyoxal in the blue wavelength region – 455.1 nm – was chosen as the ...
Hu, Jiandong, Alexandros Papayannis, Mei, Liang, Patrik Lundin, Guangyu Zhao, Svanberg, Sune, Sune Svanberg, Zhao, Guangyu, Liang Mei, Vrekoussis, Mihalis, Papayannis, Alexandros, Somesfalean, Gabriel, Bood, Joakim, Gabriel Somesfalean, Jiandong Hu, Mihalis Vrekoussis, Lundin, Patrik, Joakim Bood, Hu, Jiandong,, Somesfalean, Gabriel,, Svanberg, Sune,, Mei, Liang,, Lundin, Patrik,, Bood, Joakim,, Lund University.   +24 more
core   +1 more source

Linear System Identification and Control of a Low‐Cost High‐Performance Omnidirectional Marine Surface Vehicle for Swarming Applications

Journal of Field Robotics, EarlyView.
ABSTRACT Marine operations traditionally rely on human intervention, a costly and disruptive method. Autonomous surface vehicles (ASVs) offer a powerful alternative, capable of operating autonomously, for extended periods, and with various sensors for various missions.
Ayman El Qemmah, Gianni Cario, Alessandro Casavola, Marco Lupia, Francesco Tedesco   +4 more
wiley   +1 more source

δ 13C carbon isotopic composition of CO2 in the atmosphere by Lidar [PDF]

EPJ Web of Conferences
A differential absorption lidar (DIAL) has been developed at LMD to measure the variation of stable isotopic composition of CO2, δ 13C, in the atmosphere.
Gibert Fabien, Edouart Dimitri, Cénac Claire   +2 more
doaj   +1 more source

A Two Micron Coherent Differential Absorption Lidar Development [PDF]

, 2010
A pulsed, 2-micron coherent Differential Absorption Lidar (DIAL)/Integrated Path Differential Absorption (IPDA) transceiver, developed under the Laser Risk Reduction Program (LRRP) at NASA, is integrated into a fully functional lidar instrument.
Chen, Songsheng, Trieu, Bo C., Beyon, Jeffrey Y., Kavaya, Michael J., Bai, Yingxin, Petzar, Paul J., Yu, Jirong, Petros, Mulugeta, VanValkenburg, Randal L., Koch, Grady J., Singh, Upendra N.   +10 more
core  

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

Journal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta, S. M. Abhinandan, Anand Reddy, G. Chandana, Divya, P. Anil Kumar, Ch. Venkata Rao, Ashish Garg, Ravi C. Soni, Jogendra Kumar, Bhargav Akkinepally   +10 more
wiley   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source