Results 21 to 30 of about 377 (171)

The Space Weather Atmosphere Models and Indices (SWAMI) project: Overview and first results

Journal of Space Weather and Space Climate, 2020
Space weather driven atmospheric density variations affect low Earth orbit (LEO) satellites during all phases of their operational lifetime. Rocket launches, re-entry events and space debris are also similarly affected.
Jackson David R., Bruinsma Sean, Negrin Sandra, Stolle Claudia, Budd Chris J., Dominguez Gonzalez Raul, Down Emily, Griffin Daniel J., Griffith Matthew J., Kervalishvili Guram, Lubián Arenillas Daniel, Manners James, Matzka Jürgen, Shprits Yuri Y., Vasile Ruggero, Zhelavskaya Irina S.   +15 more
doaj   +1 more source

Modelling of Real Time Units in the Verification and Validation Process of Satellite Systems [PDF]

INCAS Bulletin
Verification and Validation (V&V) methodologies are essential to ensure the correct operations of control algorithms of the embedded software during a satellite mission.
Marius-Daniel MARINESCU, Stefan-Florin GRIGORE, Teodor-Andrei CRISTEA, Florin TACHE, Lorenzo CERCOS PITA, Samuel MUNOZ-CABALLERO, Germán MORENO ESCUDERO   +6 more
doaj   +1 more source

Radiometry of Deimos

The Astronomical Journal, 1987
Ground-based infrared photometry of Deimos at 4.8, 10, and 20 microns is reported. The observed fluxes are significantly brighter than predicted by the 'standard' thermal model. Recent recalibrations that modify the model beam pattern of the infrared emission are marginally consistent with the observations at 10 and 20, but not at 4.8 microns.
G. J. Veeder, D. L. Matson, E. F. Tedesco, L. A. Lebofsky, J. C. Gradie   +4 more
openaire   +1 more source

Design of telescopic nadir imager for geomorphology (TENGOO) and observation of surface reflectance by optical chromatic imager (OROCHI) for the Martian Moons Exploration (MMX)

Earth, Planets and Space, 2021
The JAXA’s Martian Moons Exploration (MMX) mission is planned to reveal the origin of Phobos and Deimos. It will remotely observe both moons and return a sample from Phobos.
Shingo Kameda, Masanobu Ozaki, Keigo Enya, Ryota Fuse, Toru Kouyama, Naoya Sakatani, Hidehiko Suzuki, Naoya Osada, Hiroki Kato, Hideaki Miyamoto, Atsushi Yamazaki, Tomoki Nakamura, Takaya Okamoto, Takahiro Ishimaru, Peng Hong, Ko Ishibashi, Takeshi Takashima, Ryoya Ishigami, Cheng-Ling Kuo, Shinsuke Abe, Yuya Goda, Hajime Murao, Saori Fujishima, Tsubasa Aoyama, Keiji Hagiwara, Satoko Mizumoto, Noriko Tanaka, Kousuke Murakami, Miho Matsumoto, Kenji Tanaka, Hironobu Sakuta   +30 more
doaj   +1 more source

Observations of Deimos. [PDF]

Astronomische Nachrichten, 1879
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openaire   +2 more sources

Martian moons exploration MMX: sample return mission to Phobos elucidating formation processes of habitable planets

Earth, Planets and Space, 2022
Martian moons exploration, MMX, is the new sample return mission planned by the Japan Aerospace Exploration Agency (JAXA) targeting the two Martian moons with the scheduled launch in 2024 and return to the Earth in 2029.
Kiyoshi Kuramoto, Yasuhiro Kawakatsu, Masaki Fujimoto, Akito Araya, Maria Antonietta Barucci, Hidenori Genda, Naru Hirata, Hitoshi Ikeda, Takeshi Imamura, Jörn Helbert, Shingo Kameda, Masanori Kobayashi, Hiroki Kusano, David J. Lawrence, Koji Matsumoto, Patrick Michel, Hideaki Miyamoto, Tomokatsu Morota, Hiromu Nakagawa, Tomoki Nakamura, Kazunori Ogawa, Hisashi Otake, Masanobu Ozaki, Sara Russell, Sho Sasaki, Hirotaka Sawada, Hiroki Senshu, Shogo Tachibana, Naoki Terada, Stephan Ulamec, Tomohiro Usui, Koji Wada, Sei-ichiro Watanabe, Shoichiro Yokota   +33 more
doaj   +1 more source

Process Network Models for Embedded System Design Based on the Real-Time BIP Execution Engine [PDF]

Electronic Proceedings in Theoretical Computer Science, 2018
Existing model-based processes for embedded real-time systems support the analysis of various non-functional properties, most notably schedulability, through model checking, simulation or other means.
Fotios Gioulekas, Peter Poplavko, Panagiotis Katsaros, Pedro Palomo   +3 more
doaj   +1 more source

DeimOS: A ROS-Ready operating system for the e-puck

Journal of Open Research Software
Robot Operating System (ROS) is a set of development tools that has become a de facto standard both in the academia and the industry. However, little effort has been devoted to enable ROS in small robots widely used in swarm robotics for education and ...
Miquel Kegeleirs¹, David Garzón Ramos, Mauro Birattari   +2 more
doaj   +1 more source

On-Orbit Camera Misalignment Estimation Framework and Its Application to Earth Observation Satellite

Remote Sensing, 2015
Despite the efforts for precise alignment of imaging sensors and attitude sensors before launch, the accuracy of pre-launch alignment is limited. The misalignment between attitude frame and camera frame is especially important as it is related to the ...
Seungwoo Lee, Dongseok Shin
doaj   +1 more source

Adherencia a las guías internacionales de tromboprofilaxis en pacientes sometidos a cirugía ortopédica mayor en Colombia: Resultados del Registro DEIMOS

Revista Colombiana de Ortopedia y Traumatología, 2020
Introducción: A pesar de que la implementación de guías de práctica clínica se relaciona con la disminución en la incidencia de eventos tromboembólicos pacientes sometidos a cirugía ortopédica mayor (COM), la adherencia a la tromboprofilaxis sigue ...
Guillermo Bonilla, Adolfo Llinás, Alfredo Sánchez, Sergio Monsalve, Gustavo Matson, Etna Liliana Valenzuela   +5 more
doaj   +1 more source