Results 21 to 30 of about 3,312 (202)

A potential subsurface cavity in the continuous ejecta deposits of the Ziwei crater discovered by the Chang’E-3 mission

open access: yesEarth, Planets and Space, 2021
In the radargram obtained by the high-frequency lunar penetrating radar onboard the Chang’E-3 mission, we notice a potential subsurface cavity that has a smaller permittivity compared to the surrounding materials.
Chunyu Ding, Zhiyong Xiao, Yan Su
doaj   +1 more source

The Lunar Regolith Structure and Electromagnetic Properties of Chang’E-5 Landing Site

open access: yesRemote Sensing, 2022
On 1 December 2020, China’s Chang’E-5 (CE-5) probe successfully landed in the northeastern Oceanus Procellarum. This work mainly presents the results of Lunar Regolith Penetrating Radar (LRPR) equipped on the CE-5 Lander.
Yuxi Li   +8 more
doaj   +1 more source

High-resolution permittivity estimation of ground penetrating radar data by migration with isolated hyperbolic diffractions and local focusing analyses

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Ground penetrating radar (GPR) is important for detecting shallow subsurface structures, which has been successfully used on the Earth, Moon, and Mars. It is difficult to analyze the underground permittivity from GPR data because its observation system ...
Wenmin Lv   +7 more
doaj   +1 more source

Application of coupled-wave Wentzel-Kramers-Brillouin approximation to ground penetrating radar [PDF]

open access: yes, 2017
This paper deals with bistatic subsurface probing of a horizontally layered dielectric half-space by means of ultra-wideband electromagnetic waves. In particular, the main objective of this work is to present a new method for the solution of the two ...
Marciniak, Marian   +3 more
core   +2 more sources

The WISDOM Radar: Unveiling the Subsurface Beneath the ExoMars Rover and Identifying the Best Locations for Drilling [PDF]

open access: yes, 2017
The search for evidence of past or present life on Mars is the principal objective of the 2020 ESA-Roscosmos ExoMars Rover mission. If such evidence is to be found anywhere, it will most likely be in the subsurface, where organic molecules are shielded ...
Alain Herique   +33 more
core   +3 more sources

Moon-Based Ground Penetrating Radar Derivation of the Helium-3 Reservoir in the Regolith at the Chang'E-3 Landing Site

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The Moon-based ground penetrating radar (GPR) carried by the Yutu rover performed in-situ radar measurements to explore extraterrestrial objects, which provides an unprecedented opportunity to study the shallow subsurface structure of the Moon and its ...
Chunyu Ding   +6 more
doaj   +1 more source

From Schrödinger to Von Kármán: An Intriguing New Geological Structure Revealed by the Chang'e‐4 Lunar Penetrating Radar

open access: yesGeophysical Research Letters, 2023
Since early 2019, the Lunar Penetrating Radar (LPR) onboard Chang'e‐4 (CE‐4)’s Yutu‐2 rover has been gathering data relating to the subsurface structure of the Von Kármán crater within the South Pole‐Aitken Basin (SPA) on the lunar farside. Low‐frequency
Huaqing Cao   +5 more
doaj   +1 more source

A rocky hill on the continuous ejecta of Ziwei crater revealed by the Chang’e-3 mission

open access: yesEarth and Planetary Physics, 2020
The Chinese Chang'e-3 mission landed close to the eastern rim of the ~450 m diameter Ziwei crater. Regional stratigraphy of the landing site and impact excavation model suggest that the bulk continuous ejecta deposits of the Ziwei crater are composed by ...
ChunYu Ding   +3 more
doaj   +1 more source

Ultra‐Thick Paleoregolith Layer Detected by Lunar Penetrating Radar: Implication for Fast Regolith Formation Between 3.6 and 2.35 Ga

open access: yesGeophysical Research Letters, 2021
Lunar paleoregolith was formed by repeated asteroid impact and space weathering and then buried by later lava flows, serving as important records for early solar system history. However, direct observational evidence for the paleoregolith layer is rather
Tieyuan Zhu, Jinhai Zhang, Yangting Lin
doaj   +1 more source

Radar sounding using the Cassini altimeter waveform modeling and Monte Carlo approach for data inversion observations of Titan's seas [PDF]

open access: yes, 2016
Recently, the Cassini RADAR has been used as a sounder to probe the depth and constrain the composition of hydrocarbon seas on Saturn's largest moon, Titan.
Hayes, A.   +5 more
core   +1 more source

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