نتایج جستجو برای: geostationary satellite
تعداد نتایج: 80742 فیلتر نتایج به سال:
The Bureau of Meteorology (the Bureau) has an extensive archive of geostationary satellite imagery, which is derived from a number of data sources. Most of this data now exists in a single data format, namely Man computer Interactive Data Access System (McIDAS) AREA. The McIDAS system was commissioned in the Bureau in 1985 and used to digitise locally received analogue GMS-3 data as its geostat...
Radio resource management across multiple protocol layers in satellite networks: a tutorial overview
Satellite transmissions have an important role in telephone communications, television broadcasting, computer communications, maritime navigation, and military command and control. Moreover, in many situations they may be the only possible communication set-up. Recent trends in telecommunications indicate that four major growth market/service areas are: messaging and navigation services (wirele...
The exploitation of fluctuating channel conditions in link adaption techniques for unicast transmission has been shown to provide large system capacity gains. However, the problem of choosing transmission rates for multicast transmission has not been thoroughly investigated. In this paper, we investigate multicast adaptive techniques for reliable data delivery in GEO satellite networks. An opti...
Kevin Günthner, 2 Imran Khan, 2 Dominique Elser, 2 Birgit Stiller, 2, ∗ Ömer Bayraktar, 2 Christian R. Müller, 2 Karen Saucke, Daniel Tröndle, Frank Heine, Stefan Seel, Peter Greulich, Herwig Zech, Björn Gütlich, Ines Richter, Michael Lutzer, Sabine Philipp-May, Rolf Meyer, Christoph Marquardt, 2, † and Gerd Leuchs 2 Max Planck Institute for the Science of Light, Erlangen, Germany Institute of ...
The GOES satellites are multifunctional satellites whose primary function is to provide continuous measurements of the earth’s surface and atmosphere from two geostationary orbit locations: 75EW and 135EW. This objective is accomplished with the Visible infrared spin scan radiometer Atmospheric Sounder (VAS). The atmospheric sounder is a new feature which will add a third dimension to the photo...
In this paper, we discuss on two important issues through the realization of global personal communication networks with low earth orbital (LEO) satellites. The first issue is the selection of an effective multiple access scheme which can utilize the limited spectrum allocated to these systems. In this way, we focus on the schemes based on spread spectrum techniques and explain their unique cha...
This paper deals with security for heterogeneous and inter-operable communication networks including a satellite segment. Integration of different networks enhances sustainable applications but specific vulnerabilities must be faced up too. INTERSECTION project is aimed to both design and implement an Intrusion Detection System (IDS) for the detention of anomalous events in the interconnected n...
Clouds play an important role in regulating atmospheric dynamics and thermodynamics by redistributing momentum, thermal and moisture through mixing, latent heat release, and microphysical processes. However, conventional observational data for such important parameters are usually not available. An operational cloud verification system is being developed at the Joint Center for Satellite Data A...
We investigated utilization of Japanese geostationary meteorological satellite, Multi-functional Transport Satellite (MTSAT) data which is able to provide hourly image to a terrestrial monitoring. Firstly, SZA angular effect in reflectance channel was corrected, then algorithms for daily composite were compared. Hourly measurement of MTSAT increased the chance of observing cloud-free land surfa...
Recently, earth observation system by using satellite network have attracted much attention due to their wide coverage and disaster resistance. Although the system is useful for collecting various data, which have an affect on a natural disaster, ecology and so forth, earth observation satellite hardly send the collected observation data to the ground station. This is because that the earth obs...
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