Satellite ground
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The AMS(R)S provides voice and data connectivity to users such as air traffic controllers, pilots and aircraft operators The AMSS comprises satellites, aeronautical earth stations (AESs), ground earth stations (GESs) and associated ground facilities such as a network coordination center. 7 Existing satellite systems in operation for aeronautical communications Inmatsat, MTSAT Iridium
30p
hanampro91
10-05-2013
50
7
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Tham khảo sách 'modelling simulation and optimization', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả
330p
kimngan_1
05-11-2012
34
4
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Computer-Aided Design and system analysis aim to find mathematical models that allow emulating the behaviour of components and facilities. The high competitiveness in industry, the little time available for product development and the high cost in terms of time and money of producing the initial prototypes means that the computer-aided design and analysis of products are taking on major importance.
0p
kimngan_1
05-11-2012
30
1
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A low earth orbit (LEO) satellite constellation consists of a set of satellites orbiting the Earth with high constant speed at a relatively low altitude (a few thousand kilometers) [1]. Each satellite is equipped with a fixed number of antennas that allow it to communicate with ground transmitters/receivers and with other satellites. One of the major advantages of LEO satellites (as opposed to geostationary—GEO—satellites) is that they are closer to the Earth’s surface.
21p
huggoo
20-08-2010
41
4
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The purpose of this monograph is to formulate a quantitative and self-consistent theoretical approach to wave–particle interactions occurring in space plasmas, and present a logical development of the subject. In the Earth’s magnetosphere, Nature has given us a plasma laboratory that is accessible to observations made by radio, magnetic and electric instruments on the ground, and a great variety of instruments aboard rockets and Earth-orbiting satellites. Spacecraft are making similar observations in the more distant solar system.
366p
tom_123
14-11-2012
16
3
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In his presentation, Dr M. Bittner, Rapporteur on Satellite Measurements of Atmospheric Consituents, first reviewed the GAW activities in Germany. These include supporting both Global and Regional stations. Also Germany hosts the QA/SAC for Europe and Africa and has sponsored GAW training courses at a number of locations in the country. He also explained the activities of the German Aerospace Centre (DLR) and strongly endorsed the importance of coordinating ground- and space-based atmospheric chemistry measurements.
11p
tainhacmienphi
19-02-2013
26
3
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Flexible and scalable wide area network using satellite backhauls and configurable wireless ground access. Supports broadband multimedia applications and all-IP based mobility management.
22p
nhq_khtn
07-11-2013
25
2
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