Results 1 to 10 of about 52,606 (302)

Spire RO Thermal Profiles for Climate Studies: Initial Comparisons of the Measurements from Spire, NOAA-20 ATMS, Radiosonde, and COSMIC-2

open access: yesRemote Sensing, 2023
Global Navigation Satellite System (GNSS) Radio Occultation (RO) data play an essential role in improving numerical weather prediction (NWP) and monitoring climate change.
Xin Jing, Shu-Peng Ho, Xi Shao
exaly   +3 more sources

Comparative Assessment of Spire and COSMIC-2 Radio Occultation Data Quality

open access: yesRemote Sensing, 2023
In this study, we investigate the performances of a commercial Global Navigation Satellite System (GNSS) Radio Occultation (RO) mission and a new-generation RO constellation, i.e., Spire and Constellation Observing System for Meteorology, Ionosphere, and
Xiaoming Wang   +2 more
exaly   +3 more sources

Precise orbit determination of Spire nano satellites [PDF]

open access: yesAdvances in Space Research, 2023
Spire Global, Inc. operates a growing fleet of currently more than 100 CubeSats in different low Earth orbits for commercial Earth observation. These satellites are equipped with dual-frequency GPS receivers and an attitude determination and control ...
Daniel Arnold   +2 more
exaly   +2 more sources

Spire

open access: yes, 2015
Christ Chruch Cathedral. Oxford.
Ferguson, Everett
openaire   +2 more sources

Vertical and Spanwise Wake Flow Structures of a Single Spire over Smooth Wall Surface in a Wind Tunnel [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
The aerodynamic interaction between the wake flow structure behind a single spire with a smooth wall boundary layer at a long streamwise location was observed in a wind tunnel experiment.
M. A. Fitriady   +2 more
doaj   +1 more source

Sensing the ionosphere with the Spire radio occultation constellation

open access: yesJournal of Space Weather and Space Climate, 2021
Radio occultation (RO) provides a cost-effective component of the overall sensor mix required to characterise the ionosphere over wide areas and in areas where it is not possible to deploy ground sensors. The paper describes the RO constellation that has
Angling Matthew J.   +9 more
doaj   +1 more source

Semi-supervised classification of lower-ionospheric perturbations using GNSS radio occultation observations from Spire Global’s Cubesat Constellation

open access: yesJournal of Space Weather and Space Climate, 2022
This study presents a new methodology to automatically classify perturbations in the lower ionosphere using GNSS radio occultation (RO) observations collected using Spire’s constellation of CubeSats. This methodology combines signal processing techniques
Savastano Giorgio   +2 more
doaj   +1 more source

Field and Wind Tunnel Experiments of Wind Field Simulation in the Neutral Atmospheric Boundary Layer

open access: yesAtmosphere, 2022
To investigate the pollutant dispersion of a nuclear power plant, a field tracing experiment was carried out in neutral stratification weather with the main wind direction SSW.
Dong Xie   +5 more
doaj   +1 more source

Using the Commercial GNSS RO Spire Data in the Neutral Atmosphere for Climate and Weather Prediction Studies

open access: yesRemote Sensing, 2023
Recently, the NOAA has included GNSS (Global Navigation Satellite System) Radio Occultation (RO) data as one of the crucial long-term observables for weather and climate applications.
Shu-peng Ho   +5 more
doaj   +1 more source

Early identification and treatment of COPD exacerbation using remote respiratory monitoring

open access: yesRespiratory Medicine Case Reports, 2021
Remote patient monitoring (RPM) is increasingly more accessible and accurate. The optimal utilization of RPM requires medical conditions which have predictive physiologic changes and effective outpatient therapies.
Michael B. Polsky, Neema Moraveji
doaj   +1 more source

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