Results 81 to 90 of about 3,295 (219)

Near-Surface Stratigraphic Structure of the Regolith Revealed Using Chang'e-2 Microwave Brightness Temperature Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The stratigraphic structure of the lunar regolith was essential for studying the formation and evolution of the lunar shallow layer within the lunar crust, which was constrained by previous lunar missions through spectral remote sensing, laboratory ...
Chen Zou, Guoping Hu, Wei Yang, Wuming Zhang   +3 more
doaj   +1 more source

Application of Mathematical Morphological Filtering to Improve the Resolution of Chang'e-3 Lunar Penetrating Radar Data

Remote Sensing, 2019
As one of the important scientific instruments of lunar exploration, the Lunar Penetrating Radar (LPR) onboard China’s Chang'E-3 (CE-3) provides a unique opportunity to image the lunar subsurface structure.
Jianmin Zhang, Zhaofa Zeng, Ling Zhang, Qi Lu, Kun Wang   +4 more
doaj   +1 more source

Ionospheric Day‐to‐Day Variability Driven by Nonlinear Interactions Between the Terdiurnal Tide and Planetary Waves Under Magnetospheric Modulation

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract Day‐to‐day variability is a persistent feature of the ionosphere, but distinguishing contributions from the atmosphere below or geospace above remains unclear. Here, simultaneous observations of thermospheric meridional winds and ionospheric electron density from the Sanya Incoherent Scatter Radar (SYISR) reveal that the terdiurnal tide (TDT),
Xu Zhou, Ning Zhang, Zhongqiu Wang, Haibing Ruan, Yihui Cai, You Yu, Maosheng He, Junyi Wang, Mingyuan Li, Yuyan Jin, Feng Ding, Xinan Yue   +11 more
wiley   +1 more source

Continuous monitoring of the lunar or Martian subsurface using on-board pattern recognition and neural processing of Rover geophysical data [PDF]

The ultimate goal is to create an extraterrestrial unmanned system for subsurface mapping and exploration. Neural networks are to be used to recognize anomalies in the profiles that correspond to potentially exploitable subsurface features.
Glass, C. E., Mcgill, J. W., Sternberg, B. K.   +2 more
core   +1 more source

Robotic Lunar Landers for Science and Exploration [PDF]

, 2010
NASA Marshall Space Flight Center (MSFC) and The Johns Hopkins University Applied Physics Laboratory (APL) have been conducting mission studies and performing risk reduction activities for NASA s robotic lunar lander flight projects. This paper describes
Ballard, B. W., Bassler, J. A., Chavers, D. G., Cohen, B. A., Eng, D., Hammond, M. S., Harris, D. W., Hill, L. A., Holloway, T. A., Kubota, S. D., Morse, B. J., Mulac, B. D., Reed, C. L. B.   +12 more
core   +2 more sources

LLV - Lunar Logistics Vehicle Final report [PDF]

Design of unmanned space vehicle for landing 2500 pound payload on ...
Davidson, F. M., Dickerson, S.
core   +1 more source

Characteristics of ejecta and alluvial deposits at Meteor Crater, Arizona and Odessa Craters, Texas: Results from ground penetrating radar [PDF]

Previous ground penetrating radar (GRP) studies around 50,000 year old Meteor Crater revealed the potential for rapid, inexpensive, and non-destructive sub-surface investigations for deep reflectors (generally greater than 10 m).
Grant, J. A., Schultz, P. H.
core   +1 more source

GPRlab: A ground penetrating radar data processing and analysis software based on MATLAB

SoftwareX
Ground penetrating radar (GPR) is widely used in many fields, but its data processing is limited by proprietary software and interdisciplinary knowledge.
Hongqiang Xiong, Zhiyu Zhang, Jing Li
doaj   +1 more source

Layer-Stripping Velocity Analysis Method for GPR/LPR Data

Applied Sciences
Diffraction-based velocity analysis is a key data interpretation technique in geophysical exploration, typically relying on the geometric characteristics, energy distribution, or propagation paths of diffraction waves.
Nan Huai, Tao Lei, Xintong Liu, Ning Liu
doaj   +1 more source

Workshop on Innovative Instrumentation for the In Situ Study of Atmosphere-Surface Interactions on Mars [PDF]

The speakers in the first session of the workshop addressed some of the continuing enigmas regarding the atmospheric composition, surface composition, and atmosphere-surface interactions on Mars; provided a description of a database of proposed payloads ...
Fegley, Bruce, Jr., Waenke, Heinrich
core   +1 more source