Results 231 to 240 of about 803,175 (272)

A Deep-Learning Model for Automated Detection of Intense Midlatitude Convection Using Geostationary Satellite Images

Weather and forecasting, 2020
Intense thunderstorms threaten life and property, impact aviation, and are a challenging forecast problem, particularly without precipitation-sensing radar data.
John Cintineo, M. Pavolonis, J. Sieglaff, A. Wimmers, Jason Brunner, Willard Bellon   +5 more
semanticscholar   +1 more source

Geostationary-satellite earth coverage

Proceedings of the Institution of Electrical Engineers, 1975
The basic problem considered is the relation of the shape of the beam of a geostationary satellite antenna to the area that it covers on the surface of the earth. It is envisaged that circular or elliptical beams may be used, but the beam is defined in general terms by a beam contour on a beam plane perpendicular to the beam axis by two angular co ...
openaire   +1 more source

Robotics for geostationary satellite servicing

Robotics and Autonomous Systems, 1998
The geostationary orbit as well as the satellite systems stationed there for telecommunication, TV broadcasting, weather forecasting, etc. have high commercial and strategic value. To safeguard the huge capital investments and the usability of the orbit itself, it will soon be indispensable to have adequate remote intervention means for the servicing ...
G. Visentin, D.L. Brown
openaire   +1 more source

European small geostationary communications satellites

Acta Astronautica, 2011
Abstract Hispasat Advanced Generation 1 (HAG1) is the first satellite using the SGEO platform, which is under the development in the ESA Artes-11 program. Since the last presentation in the IAC 2007, a European industrial consortium led by OHB has completed the mission and spacecraft design. The platform Preliminary Design Review has been carried out
Dr. Wei Sun, Frank Ellmers, Andreas Winkler, Herbert Schuff, Manuel Julián Sansegundo Chamarro   +4 more
openaire   +1 more source

Geostationary Satellite Orbital Geometry

IEEE Transactions on Communications, 1972
In the design of communication systems using geostationary satellites, it is essential to know the relationships among the slant range, elevation angle, central angle, and nadir angle.
openaire   +1 more source

Local Oscillator Distribution Using a Geostationary Satellite

Experimental Astronomy, 2004
A satellite communication system suitable for distribution of local oscillator reference signals for a widely spaced microwave array has been developed and tested experimentally. The system uses a round-trip correction method to remove effects of atmospheric fluctuations and radial motion of the satellite.
J. Bardin, S. Weinreb, D. Bagri
openaire   +1 more source

Common-View Time Transfer Using Geostationary Satellite

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2020
The National Time Service Center (NTSC), Chinese Academy of Sciences (CAS), Xi'an, China, has developed a method for common-view time transfer using Geostationary Earth Orbit (GEO) satellite (GCV) applicable to the time and frequency transfer at distant stations. This method is independent of Global Navigation Satellite System (GNSS) time and frequency
Wei Pei, Yang Chaozhong, Yang Xuhai, Cao Fen, Hu Zhenyuan, Li Zhigang, Guo Ji, Li Xiaohui, Qin Weijin   +8 more
openaire   +2 more sources

Joint Retrieval of Aerosol Optical Depth and Surface Reflectance Over Land Using Geostationary Satellite Data

IEEE Transactions on Geoscience and Remote Sensing, 2019
The advanced Himawari imager (AHI) aboard the Himawari-8 geostationary satellite provides high-frequency observations with broad coverage, multiple spectral channels, and high spatial resolution.
L. She, Yong Xue, Xihua Yang, John F. Leys, J. Guang, Y. Che, C. Fan, Yanqing Xie, Ying Li   +8 more
semanticscholar   +1 more source

Geostationary satellites for small jobs

IEEE Spectrum, 2020
Atypical geostationary satellite is as big as a van, as heavy as a hippopotamus, and as long-lived as a horse. These parameters shorten the list of companies and countries that can afford to build and operate the things.
openaire   +1 more source

Internal solitary wave observations in the Flores Sea using the Himawari-8 geostationary satellite

International Journal of Remote Sensing, 2019
The Japanese Meteorological Agency’s geostationary satellite Himawari-8/Advanced Himawari Imager (AHI) images, acquired over the Flores Sea in Indonesia, observed that long internal solitary waves (ISWs) seem to be generated from the Sape Strait, which ...
I. W. G. A. Karang, Chonnaniyah, T. Osawa   +2 more
semanticscholar   +1 more source