Results 31 to 40 of about 139,455 (200)
Odessa Astronomical Publications, 2017 Classical Laplas method for determination of Keplerian orbital elements is described. The values obtained are improved by the method of differential corrections.
O. A. Bazyey +2 more
doaj +1 more source
Optimal Co-location of Geo-satellites in the Orbital Slot of 120 Degrees East Using Differential Game Theory [PDF]
علوم، فناوری و کاربردهای فضاییDue to the increasing demand for locating satellites in the geostationary orbit and considering the operational limitations in defining the geo-orbital slots, the use of a same location by several satellites is one of the solutions to increase the ...
fatemeh amozegary +2 more
doaj +1 more source
Remote Sensing, 2021 Geostationary meteorological satellites can provide continuous observations of high-impact weather events with a high temporal and spatial resolution.
Yuanbing Wang +3 more
doaj +1 more source
Using microwave imager observations to improve the ocean temperature in a coupled NWP system
Quarterly Journal of the Royal Meteorological Society, EarlyView.A recent upgrade to the ECMWF IFS has implemented outer‐loop coupling between the atmosphere and the ocean. This work uses this method to pass ocean skin temperature estimates derived from satellite‐borne microwave imagers to the ocean data assimilation system; the updated ocean state is then passed back to the atmospheric system.
Tracy Scanlon +4 more
wiley +1 more source
Analysis of Relative Motion of Collocated Geostationary Satellites with Geometric Constraints [PDF]
, 2013 This paper investigates the design of the relative motion orbits of geostationary satellites in the presence of geometric constraints. A geometric constraint is defined by a sensor's pointing direction and field of view.
de Bruijn, F.J., Gill, E.
core
Coupled observation‐operator approximations in outer‐loop coupling data assimilation
Quarterly Journal of the Royal Meteorological Society, EarlyView.We present a methodology for coupled variational data assimilation that allows the effect of coupled observation operators whilst maintaining separate minimisations across model components. This allows us to constrain the atmosphere, ocean, and sea‐ice components of our coupled model directly from satellite radiances. We illustrate the system in action
P. A. Browne +5 more
wiley +1 more source
Autonomous control of a reconfigurable constellation of satellites on geostationary orbit with artificial potential fields [PDF]
, 2012 This paper presents a method of controlling a constellation of small satellites in Geostationary Earth Orbit (GEO) such that the constellation is able to reconfigure - changing the angular position of its members relative to the Earth’s surface in order ...
Colombo, Camilla +2 more
core +3 more sources
Quarterly Journal of the Royal Meteorological Society, EarlyView.This study investigates the thermodynamic and microphysical characteristics of updrafts and downdrafts of tropical deep convective anvil clouds using in situ measurements. We found that parts of the downdrafts are in ice supersaturation in these clouds.
Sreehari Kizhuveettil +6 more
wiley +1 more source
Evaluation and assimilation of Arctic Weather Satellite data in the AROME‐Arctic forecast system
Quarterly Journal of the Royal Meteorological Society, EarlyView.The Arctic Weather Satellite (AWS), launched in August 2024, is a prototype for the future EPS–Sterna constellation of small satellites carrying an innovative microwave sounder. We present the first assessment of AWS in the regional AROME‐Arctic numerical weather prediction system, covering post‐launch calibration results and the impact of AWS ...
Stéphanie Guedj +2 more
wiley +1 more source
A Space Weather Forecasting System with Multiple Satellites Based on a Self-Recognizing Network
Sensors, 2014 This paper proposes a space weather forecasting system at geostationary orbit for high-energy electron flux (>2 MeV). The forecasting model involves multiple sensors on multiple satellites.
Masahiro Tokumitsu, Yoshiteru Ishida
doaj +1 more source