Results 61 to 70 of about 5,275,293 (190)

A Multiagent Decision-Making Model for Martian Landing Site Selection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Selecting suitable landing sites on Mars remains one of the key challenges due to the complex terrain of Mars and the diverse scientific objectives in Mars exploration missions.
Rong Wang, Yongjiu Feng, Panli Tang, Pengshuo Li, Yiyan Dong, Yusheng Xu, Chao Wang, Sicong Liu, Yanmin Jin, Shijie Liu, Xiaohua Tong   +10 more
doaj   +1 more source

Habitability of the Phoenix landing site [PDF]

Journal of Geophysical Research: Planets, 2010
The Phoenix mission's key objective was to search for a habitable zone. Mission results are used to evaluate habitability where Phoenix landed. A habitability probability (HI) is defined as the product of probabilities for the presence of liquid water (Plw), energy (Pe), nutrients (Pch), and a benign environment (Pb).
Stoker, Carol R., Zent, Aaron, Catling, David C., Douglas, Susanne, Marshall, John R., Archer, Douglas, Clark, Benton, Kounaves, Samuel P., Lemmon, Mark T., Quinn, Richard, Renno, Nilton, Smith, Peter H., Young, Suzanne M.M.   +12 more
openaire   +2 more sources

Landing Site Selection and Overview of China’s Lunar Landing Missions

Space Science Reviews, 2020
Landing site selection is of fundamental importance for lunar landing mission and it is closely related to the scientific goals of the mission. According to the widely concerned lunar science goals and the landing site selection of the ongoing lunar ...
Jianjun Liu, Xingguo Zeng, Chunlai Li, X. Ren, Wei Yan, Xu Tan, Xiaoxia Zhang, Wangli Chen, W. Zuo, Yuxuan Liu, Bin Liu, Dawei Liu, Qin Zhou, Z. Ouyang   +13 more
semanticscholar   +1 more source

From Landing site to Local Centre

Danish Journal of Archaeology
The Viking Age represents a period of significant dynamism, during which local centres and urban sites participated to varying extents in maritime networks.
Jette Linaa
doaj   +1 more source

Safe Helicopter Landing on Unprepared Terrain Using Onboard Interferometric Radar

Sensors, 2020
This letter proposes a radar interferometric survey system for the ground surface of helicopter landing sites. This system generates high-quality three-dimensional terrain surface topography data and estimates the slope of the site with the required ...
Pavel E. Shimkin, Alexander I. Baskakov, Aleksey A. Komarov, Min-Ho Ka   +3 more
doaj   +1 more source

Development and Demonstration of Navigation Doppler Lidar for Planetary Landing Missions [PDF]

EPJ Web of Conferences
A coherent Doppler lidar has been developed by NASA for providing vector velocity and altitude data to landing vehicles. Future robotic and manned missions to planetary bodies demand precise ground-relative velocity and altitude data to execute complex ...
Amzajerdian Farzin, Hines Glenn D., Gragossian Aram, Acevedo Elisa Leal, Hsu Jonathan, Laughter Sean. A., Dostart Nathan A., Heppler Jacob M., Follman Jacob J., Liles Kaitlin A.K., Martin Kimberly J., Litton Daniel. K.   +11 more
doaj   +1 more source

Ventifacts at the Pathfinder landing site [PDF]

Journal of Geophysical Research: Planets, 1999
About half of the rocks at the Mars Pathfinder Ares Vallis landing site appear to be ventifacts, rocks abraded by windborne particles. Comparable resolution images taken by the Imager for Mars Pathfinder (IMP) camera and the Viking landers show that ventifacts are more abundant at the Pathfinder site.
N. T. Bridges, R. Greeley, A. F. C. Haldemann, K. E. Herkenhoff, M. Kraft, T. J. Parker, A. W. Ward   +6 more
openaire   +1 more source

Subsurface Structure at the InSight Landing Site From Compliance Measurements by Seismic and Meteorological Experiments

Journal of Geophysical Research - Planets, 2020
Measurements of ground compliance at the InSight landing site—describing the surface response to pressure loading—are obtained from seismic and meteorological data.
B. Kenda, M. Drilleau, Raphaël F. Garcia, T. Kawamura, N. Murdoch, N. Compaire, Philippe Lognonné, A. Spiga, R. Widmer‐Schnidrig, P. Delage, V. Ansan, Christos Vrettos, Sebastien Rodriguez, W. Banerdt, D. Banfield, Daniele Antonangeli, U. Christensen, D. Mimoun, A. Mocquet, T. Spohn   +19 more
semanticscholar   +1 more source

Winds at the Phoenix landing site [PDF]

Journal of Geophysical Research: Planets, 2010
Wind speeds and directions were measured on the Phoenix Lander by a mechanical anemometer, the so‐called Telltale wind indicator. Analysis of images of the instrument taken with the onboard imager allowed for evaluation of wind speeds and directions.
Holstein-Rathlou, Christina, Gunnlaugsson, Haraldur Pall, Merrison, Jonathan P.; id_orcid 0000-0003-4362-6356, Bean, K. M., Cantor, B. A., Davis, J. A., Davy, R., Drake, N. B., Ellehøj, Mads Dam, Goetz, W., Hviid, S.F., Lange, C.F., Larsen, S.E., Lemmon, M.T., Madsen, M.B., Malin, M., Moores, J.E., Nørnberg, Per, Smith, P., Tamppari, L.K., Taylor, P.A.   +20 more
openaire   +4 more sources

Fragments Delivered by Secondary Craters at the Chang'E‐4 Landing Site

Geophysical Research Letters, 2020
The Chang'E‐4 landing site is depleted with boulders seen from both orbit and surface. However, the Yutu‐2 rover came across thousands of concreted fragments in and around an abnormally fresh crater that has more elevated northwestern rims. The origin of
C. Ding, Zhiyong Xiao, Bo Wu, Yuan Li, N. Prieur, Yuzhen Cai, Yan Su, J. Cui   +7 more
semanticscholar   +1 more source