Results 21 to 30 of about 133,514 (345)

Geology of the Kuiper quadrangle (H06), Mercury

Journal of Maps, 2022
The Kuiper quadrangle (H06) is located at the equatorial zone of Mercury and encompasses the area between 288°E – 360°E and 22.5°N – 22.5°S. Using the NASA MESSENGER data, we compiled a geological map of the quadrangle at a 1:3,000,000 scale. The mapping
L. Giacomini, V. Galluzzi, M. Massironi, L. Ferranti, P. Palumbo   +4 more
doaj   +1 more source

3D Discrete element method modeling of the cone penetration test in lunar regolith simulant with various internal friction angles

Geo-spatial Information Science
The mechanical behavior of lunar regolith is highly influenced by its diverse mechanical properties, which are critical for geotechnical engineering activities during lunar exploration missions.
Siji Sanlang, Chao Wang, Xiaohua Tong, Huan Xie, Yongjiu Feng, Jia Li, Mingjing Jiang, Xiong Xu, Yanmin Jin   +8 more
doaj   +1 more source

Semantic Segmentation of Martian Landforms with Sparse Scribble Annotations Using a Pseudo-Labeling Strategy [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Deep learning-based semantic segmentation techniques play a crucial role in the rapid mapping of Martian landforms. However, creating an annotated dataset for Martian landforms is a labor-intensive and time-consuming process.
P. Ye, P. Ye, R. Huang, R. Huang, P. Wang, Y. Xu, Y. Xu, Z. Ye, Z. Ye, Y. Feng, Y. Feng, X. Tong, X. Tong   +12 more
doaj   +1 more source

Mapping Exoplanets

, 2020
The varied surfaces and atmospheres of planets make them interesting places to live, explore, and study from afar. Unfortunately, the great distance to exoplanets makes it impossible to resolve their disk with current or near-term technology. It is still
A Shporer, AP Showman, B Drummond, BJ Foley, BJ Foley, BJ Foley, BO Demory, C Beichman, C Dorn, C Majeau, C Marois, D Angerhausen, D Apai, D Charbonneau, D Deming, D Höning, D Keating, D Keating, D Sudarsky, D Veras, DJ Armstrong, DM Williams, DS Abbot, E Agol, E Buenzli, E Gaidos, E Pallé, E Rauscher, E Rauscher, EMR Kempton, H Kawahara, H Kawahara, H Kawahara, H Kawahara, HA Knutson, HA Knutson, HM Haggard, HN Russell, I Dobbs-Dixon, I Dobbs-Dixon, I Dobbs-Dixon, I Gómez-Leal, IAG Snellen, IJM Crossfield, J de Wit, J Lustig-Yaeger, JC Schwartz, JC Schwartz, JH Jiang, K Heng, K Mandel, KB Stevenson, L Dang, L Rossi, LJ Esteves, LJ Esteves, M Aizawa, M Brogi, M Roman, MAS McTier, MF Sterzik, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NK Lewis, PGJ Irwin, PHH Oakley, PKG Williams, R Luger, R Luger, S Fan, T Karalidi, T Louden, T Louden, TD Robinson, TD Robinson, TD Robinson, TG Beatty, TJ Bell, V Kostov, V Parmentier, Y Fujii, Y Fujii, Y Fujii, YK Feng   +91 more
core   +1 more source

Global mapping of iron and titanium oxides in the lunar megaregolith and subsurface [PDF]

, 2007
[Abstract]: This paper reports mapping results obtained by remote sensing analysis of Iron and Titanium oxides in the megaregolith under the lunar Highlands regolith and in the subsurface under the Mare and South Pole Aitken basin regolith. FeO and TiO2
Carter, B. D., Jackson, Noel William
core   +2 more sources

Spatial Pattern Investigation of Olivine on Mars using OMEGA and MOLA Remote Sensing Data: A Case Study at Valles Marineris and Nili Fossae [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Olivine is a mineral indicative of water activity in the mantle, and its presence can elucidate the petrological evolution and history of magmatic igneous rocks. In this work, we conducted a preliminary investigation into the characteristics and patterns
L. Jiao, Y. Xu, Y. Xu, R. Huang, R. Huang, Z. Ye, Z. Ye, S. Liu, S. Liu, S. Liu, S. Liu, X. Tong, X. Tong   +12 more
doaj   +1 more source

MOBILE MAPPING OF THE LA CORONA LAVATUBE ON LANZAROTE [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Planetary surfaces consist of rough terrain and cave-like environments. Future planetary exploration demands for accurate mapping. However, recent backpack mobile mapping systems are mostly tested in structured, indoor environments.
H. A. Lauterbach, D. Borrmann, A. Nüchter, A. P. Rossi, V. Unnithan, P. Torrese, R. Pozzobon   +6 more
doaj   +1 more source

Retrieving Telemetry Range From ICESat-2 Data by a No-Prior-Terrain Onboard Filtering Algorithm

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) is widely used in mapping and monitoring the changes of ice sheets and forest vegetation. However, the satellite receives all the photons returning from around 532 nm, including surface signal ...
Yuan Sun, Huan Xie, Chunhui Wang, Qi Xu, Binbin Li, Changda Liu, Min Ji, Xiaohua Tong   +7 more
doaj   +1 more source

Visual-LiDAR Odometry for Planetary Rover with Plane Constraints [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
In space exploration missions, planetary rovers require precise navigation to ensure operational safety and efficiency. This paper presents a novel visual-LiDAR odometry method designed specifically for planetary rovers, aiming to address the challenges ...
L. Zhang, R. Huang, R. Huang, Y. Xu, Y. Xu, Z. Ye, Z. Ye, C. Xiao, C. Xiao, X. Tong, X. Tong   +10 more
doaj   +1 more source

Effects of multi-excitation on vibration characteristics of planetary gear system

Alexandria Engineering Journal, 2022
In this study, the effects of multi-excitation on the vibration responses of each planetary gear component is investigated based on the translational-rotational dynamic model of planetary gear system.
Yong Wang, Yinghua Liao, Huachao Xu
doaj   +1 more source