Results 61 to 70 of about 7,433 (210)

A Simple Method for Correcting Empirical Model Densities During Geomagnetic Storms Using Satellite Orbit Data

Space Weather, 2020
Empirical models of the thermospheric density are routinely used to perform orbit maintenance, satellite collision avoidance, and estimate time and location of re‐entry for spacecraft.
Daniel A. Brandt, Charles D. Bussy‐Virat, Aaron J. Ridley   +2 more
doaj   +1 more source

Spaceborne Far‐Infrared Signal Simulations Over the Antarctic Plateau With Temperature‐Dependent Ice Cloud Optical Properties

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Longwave cloud radiative effects significantly influence variability in global and regional Earth systems. However, there have been very few, if any, measurements of the far‐infrared (FIR) radiation over the polar regions, where about half of the outgoing longwave radiation is in the FIR spectrum. This motivated the Polar Radiant Energy in the
Tong Ren, Ping Yang, Xianglei Huang
wiley   +1 more source

Proton‐Radiation‐Tolerant Silicon Photonic Charge Sensor for Spacecraft Applications

Advanced Sensor Research, Volume 5, Issue 9, September 2026.
A photonic charge sensor based on silicon photonic crystal waveguides is evaluated under proton irradiation to clarify radiation‐induced optical absorption during operation. The study quantitatively determines absorption increase at 20 keV and demonstrates retained spacecraft‐potential sensing after high‐fluence exposure, providing a quantitative basis
Wataru Takahama, Kosei Otsuka, Ayumi Ishihara, Rikuto Hojo, Tomofumi Mogami, Kazuhiro Toyoda, Kohtaku Suzuki, Yasushi Takahashi   +7 more
wiley   +1 more source

Power Budgets for CubeSat Radios to Support Ground Communications and Inter-Satellite Links

IEEE Access, 2017
CubeSats are a class of pico-satellites that have emerged over the past decade as a cost-effective alternative to the traditional large satellites to provide space experimentation capabilities to universities and other types of small enterprises, which ...
Otilia Popescu
doaj   +1 more source

Model‐Based Systems Engineering in Space Applications: A Comprehensive Literature Review

Systems Engineering, Volume 29, Issue 5, Page 975-1017, September 2026.
ABSTRACT The growing complexity of space engineering is driving the demand to embrace the adoption of Model‐Based Systems Engineering (MBSE). Although the MBSE is well‐practiced in the space industry, the level of effort and need required to obtain the benefits of MBSE vastly differ across enterprises; this disparity presents a significant challenge to
Rehobot Bekele Buruso, Sara Himmiche, Taiwo Tejumola, Yeshirun Alemayehu, Bertrand Rose   +4 more
wiley   +1 more source

The Daily Atmospheric Ionospheric Limb Imager (DAILI) CubeSat Experiment

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The Daily Atmospheric Ionospheric Limb Imager (DAILI) (Daily Atmospheric and Ionospheric Limb Imager) mission utilized a 6U CubeSat, deployed at about 410 km altitude in a 51‐degree orbit, to make simultaneous daytime limb measurements in two colors; at 630 nm to measure the OI (630 nm) redline and at 765 nm to measure the O2 ${\mathrm{O}}_{2}$
James H. Hecht, William Chavez, Andrew B. Christensen, Ian Collett, Geoffrey Crowley, Lynette J. Gelinas, Brian Habing, Brian Hardy, David Hinkley, Garrett Kinum, David Rock, Adam Vore, David Warren, Richard L. Walterscheid, Jeng‐Hwa Yee, Yongliang Zhang   +15 more
wiley   +1 more source

On the verge of an astronomy CubeSat revolution [PDF]

Nature Astronomy, 2018
Updated version published in Nature Astronomy's May 2018 issue, and can be read here: https://t.co ...
openaire   +2 more sources

Interferometric Synthetic Aperture Radar (InSAR) for Monitoring Seasonal Snow

Water Resources Research, Volume 62, Issue 9, September 2026.
Abstract Interferometric Synthetic Aperture Radar (InSAR) offers a potential pathway for measuring seasonal snow water equivalent (SWE) and snow depth at spatial and temporal scales needed for basin‐scale hydrology. First proposed for seasonal snow more than 25 years ago, InSAR uses repeat‐pass radar phase differences to estimate changes in SWE or ...
Jack Tarricone, Ross T. Palomaki, Randall Bonnell, Zachary Hoppinen, Shadi Oveisgharan, Jorge Jorge Ruiz, Hans‐Peter Marshall, Elias J. Deeb, Carrie Vuyovich, Steven A. Margulis, Simon Yueh, Richard R. Forster, Ryan W. Webb, Daniel McGrath, Juha Lemmetyinen, Kelly Elder, Rashmi Shah, Xiaolan Xu   +17 more
wiley   +1 more source

Assessing temporal sampling uncertainty in hydrological modelling using multi-sensor observations from GPM and TROPICS

Frontiers in Remote Sensing
Satellite-based precipitation products are widely used for hydrological modelling; however, temporal sampling uncertainty caused by infrequent satellite overpasses can significantly affect runoff estimation, particularly in mountainous and flood-prone ...
Ajay Sharma, Dibyandu Roy, Indu J, Indu J   +3 more
doaj   +1 more source

Polygon‐Based Spectral Reflectance Sampling for Real‐Time River Discharge Estimation

Water Resources Research, Volume 62, Issue 9, September 2026.
Abstract River discharge estimation (RDE) methods are traditionally prone to high costs, vulnerability to extreme events, and are constrained by real‐time data availability. Current remote sensing‐based RDE approaches mainly extract basic river features such as width and water surface elevation, but rarely exploit the full spectral information from ...
Saeed HedayatiAram, Hossein Alizadeh, Barat Mojaradi   +2 more
wiley   +1 more source