Results 41 to 50 of about 2,781,871 (195)

Observations and interpretations of geomorphologic features in the Tianwen-1 landing area on Mars by using orbital imagery data

open access: yesEarth and Planetary Physics, 2023
China’s first Mars exploration mission, Tianwen-1, successfully landed in southern Utopia Planitia on Mars on May 15, 2021. This work presents a detailed investigation of the geologic context of the landing area surface for this mission based on orbital ...
Hai Huang   +12 more
doaj   +1 more source

Penetrating particle ANalyzer (PAN)

open access: yes, 2019
PAN is a scientific instrument suitable for deep space and interplanetary missions. It can precisely measure and monitor the flux, composition, and direction of highly penetrating particles ($> \sim$100 MeV/nucleon) in deep space, over at least one full ...
Ambrosi, G.   +20 more
core   +1 more source

Deep space monitor communication satellite system Patent [PDF]

open access: yes, 1970
Elimination of tracking occultation problems occurring during continuous monitoring of interplanetary missions by using Earth orbiting communications ...
Clemens, G. W., Jr., Mascy, A. C.
core   +1 more source

Geological characteristics of Chang’E-6 landing area in micro-scale unveiled by new observation data

open access: yesNature Communications
Chang’E-6 mission successfully achieved humanity’s first sample return from the farside of the Moon. Here, we report a high-precision terrain dataset with millimeter-to-decimeter spatial resolution around the CE-6 landing site. Based on this dataset, the
Wei Yan   +10 more
doaj   +1 more source

Division of Magnetic Flux Rope via Magnetic Reconnection Observed in the Magnetotail

open access: yesGeophysical Research Letters, 2023
Using high‐resolution data from Magnetospheric Multiscale (MMS) mission, we report an intense current layer at the center of a flux rope (FR) in the magnetotail.
Xinmin Li, Rongsheng Wang, Quanming Lu
doaj   +1 more source

The Riemannian Geometry of Deep Generative Models

open access: yes, 2017
Deep generative models learn a mapping from a low dimensional latent space to a high-dimensional data space. Under certain regularity conditions, these models parameterize nonlinear manifolds in the data space.
Fletcher, P. Thomas   +2 more
core   +1 more source

Evaluating the Effectiveness of Shielding Material, Vehicle Shape and Astronaut Position for Deep Space Travel [PDF]

open access: yes, 2020
Background: As future crewed, deep space missions are being planned, it is important to assess how spacecraft design can be used to minimize radiation exposure.
Bilbao y Leon, Sama   +3 more
core   +1 more source

Structured Optical Receivers for Efficient Deep-Space Communication

open access: yes, 2017
We discuss conceptual designs for structured optical receivers that can alleviate the requirement for high peak-to-average power ratio in photon-starved optical communication.
Banaszek, Konrad, Jachura, Michał
core   +1 more source

Anomaly Detection Method for Harmonic Reducers with Only Healthy Data

open access: yesSensors
A harmonic reducer is an important component of industrial robots. In practical applications, it is difficult to obtain enough anomaly data from error cases for the supervised training of models.
Yuqing Li   +3 more
doaj   +1 more source

Large‐Scale Disturbances in the Upper Thermosphere Induced by the 2022 Tonga Volcanic Eruption

open access: yesGeophysical Research Letters, 2023
The effects of volcanic eruptions on the ionosphere have been well studied, however, evidence for the anticipated upper atmospheric neutral variations and their exact extents of change are rarely available.
Ruoxi Li   +10 more
doaj   +1 more source

Home - About - Disclaimer - Privacy