The Experts below are selected from a list of 10095 Experts worldwide ranked by ideXlab platform
D. Wettergreen - One of the best experts on this subject based on the ideXlab platform.
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The Atacama Desert Trek: outcomes
Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146), 1998Co-Authors: D. Bapna, E. Rollins, J. Murphy, E. Maimone, W. Whittaker, D. WettergreenAbstract:In June and July 1997, Nomad, a planetary-relevant mobile robot, traversed more than 220 kilometers across the barren Atacama Desert in Chile, exploring a landscape analogous to the surfaces of the Moon and Mars. In this unprecedented demonstration, Nomad operated both autonomously and under the control of operators thousands of kilometers away, addressing issues of robot configuration, communication, position estimation, and navigation in rugged, natural terrain. The field experiment also served to test technologies for remote geological investigation, paving the way for new exploration strategies on Earth and beyond. Finally, by combining safeguarded teleoperation with panoramic visualization and a novel user interface, the Atacama Desert Trek provided the general public a compelling interactive experience an opportunity to remotely drive an exploratory robot. Nomad's performance in the Atacama Desert Trek set new benchmark in high performance robotics operations relevant to terrestrial and planetary exploration. This paper presents an overview of the experiment, describes technologies key to Nomad's success, and discusses outcomes and implications.
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operating nomad during the atacama desert trek
1998Co-Authors: D. Wettergreen, Maria Bualat, Daniel Christian, Kurt Schwehr, H Thomas, Deanne Tucker, Eric ZbindenAbstract:Nomad is a mobile robot designed for extended planetary exploration. In June and July of 1997, Nomad performed the first such mission, traversing more than 220 kilometers in the Atacama Desert of Chile and exploring a landscape analogous to that of the Moon and Mars. Nomad's journey, the Atacama Desert Trek, was an unprecedented demonstration of long-distance, long-duration robotic operation. Guided by operators thousands of kilometers away but telepresent via immersive imagery and interfaces, Nomad operated continuously for 45 days. Science field experiments evaluated exploration strategies and analysis techniques for future terrestrial and planetary missions.
D. Bapna - One of the best experts on this subject based on the ideXlab platform.
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The Atacama Desert Trek: outcomes
Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146), 1998Co-Authors: D. Bapna, E. Rollins, J. Murphy, E. Maimone, W. Whittaker, D. WettergreenAbstract:In June and July 1997, Nomad, a planetary-relevant mobile robot, traversed more than 220 kilometers across the barren Atacama Desert in Chile, exploring a landscape analogous to the surfaces of the Moon and Mars. In this unprecedented demonstration, Nomad operated both autonomously and under the control of operators thousands of kilometers away, addressing issues of robot configuration, communication, position estimation, and navigation in rugged, natural terrain. The field experiment also served to test technologies for remote geological investigation, paving the way for new exploration strategies on Earth and beyond. Finally, by combining safeguarded teleoperation with panoramic visualization and a novel user interface, the Atacama Desert Trek provided the general public a compelling interactive experience an opportunity to remotely drive an exploratory robot. Nomad's performance in the Atacama Desert Trek set new benchmark in high performance robotics operations relevant to terrestrial and planetary exploration. This paper presents an overview of the experiment, describes technologies key to Nomad's success, and discusses outcomes and implications.
Giuliano Liuzzi - One of the best experts on this subject based on the ideXlab platform.
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methane on mars new insights into the sensitivity of ch4 with the nomad exomars spectrometer through its first in flight calibration
Icarus, 2019Co-Authors: Giuliano Liuzzi, Geronimo L Villanueva, Michael J Mumma, M D Smith, F Daerden, Bojan Ristic, I R Thomas, Ann Carine Vandaele, M R PatelAbstract:Abstract The Nadir and Occultation for MArs Discovery instrument (NOMAD), onboard the ExoMars Trace Gas Orbiter (TGO) spacecraft was conceived to observe Mars in solar occultation, nadir, and limb geometries, and will be able to produce an outstanding amount of diverse data, mostly focused on properties of the atmosphere. The infrared channels of the instrument operate by combining an echelle grating spectrometer with an Acousto-Optical Tunable Filter (AOTF). Using in-flight data, we characterized the instrument performance and parameterized its calibration. In particular: an accurate frequency calibration was achieved, together with its variability due to thermal effects on the grating. The AOTF properties and transfer function were also quantified, and we developed and tested a realistic method to compute the spectral continuum transmitted through the coupled grating and AOTF system. The calibration results enabled unprecedented insights into the important problem of the sensitivity of NOMAD to methane abundances in the atmosphere. We also deeply characterized its performance under realistic conditions of varying aerosol abundances, diverse albedos and changing illumination conditions as foreseen over the nominal mission. The results show that, in low aerosol conditions, NOMAD single spectrum, 1σ sensitivity to CH4 is around 0.33 ppbv at 20 km of altitude when performing solar occultations, and better than 1 ppbv below 30 km. In dusty conditions, we show that the sensitivity drops to 0 below 10 km. In Nadir geometry, results demonstrate that NOMAD will be able to produce seasonal maps of CH4 with a sensitivity around 5 ppbv over most of planet's surface with spatial integration over 5 × 5° bins. Results show also that such numbers can be improved by a factor of ~10 to ~30 by data binning. Overall, our results quantify NOMAD's capability to address the variable aspects of Martian climate.
E. Rollins - One of the best experts on this subject based on the ideXlab platform.
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The Atacama Desert Trek: outcomes
Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146), 1998Co-Authors: D. Bapna, E. Rollins, J. Murphy, E. Maimone, W. Whittaker, D. WettergreenAbstract:In June and July 1997, Nomad, a planetary-relevant mobile robot, traversed more than 220 kilometers across the barren Atacama Desert in Chile, exploring a landscape analogous to the surfaces of the Moon and Mars. In this unprecedented demonstration, Nomad operated both autonomously and under the control of operators thousands of kilometers away, addressing issues of robot configuration, communication, position estimation, and navigation in rugged, natural terrain. The field experiment also served to test technologies for remote geological investigation, paving the way for new exploration strategies on Earth and beyond. Finally, by combining safeguarded teleoperation with panoramic visualization and a novel user interface, the Atacama Desert Trek provided the general public a compelling interactive experience an opportunity to remotely drive an exploratory robot. Nomad's performance in the Atacama Desert Trek set new benchmark in high performance robotics operations relevant to terrestrial and planetary exploration. This paper presents an overview of the experiment, describes technologies key to Nomad's success, and discusses outcomes and implications.
J. Murphy - One of the best experts on this subject based on the ideXlab platform.
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The Atacama Desert Trek: outcomes
Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146), 1998Co-Authors: D. Bapna, E. Rollins, J. Murphy, E. Maimone, W. Whittaker, D. WettergreenAbstract:In June and July 1997, Nomad, a planetary-relevant mobile robot, traversed more than 220 kilometers across the barren Atacama Desert in Chile, exploring a landscape analogous to the surfaces of the Moon and Mars. In this unprecedented demonstration, Nomad operated both autonomously and under the control of operators thousands of kilometers away, addressing issues of robot configuration, communication, position estimation, and navigation in rugged, natural terrain. The field experiment also served to test technologies for remote geological investigation, paving the way for new exploration strategies on Earth and beyond. Finally, by combining safeguarded teleoperation with panoramic visualization and a novel user interface, the Atacama Desert Trek provided the general public a compelling interactive experience an opportunity to remotely drive an exploratory robot. Nomad's performance in the Atacama Desert Trek set new benchmark in high performance robotics operations relevant to terrestrial and planetary exploration. This paper presents an overview of the experiment, describes technologies key to Nomad's success, and discusses outcomes and implications.