نتایج جستجو برای: satellite communications
تعداد نتایج: 157046 فیلتر نتایج به سال:
This paper provides an overview of the EUROCONTROL activities and involvement in relation to using satellite communications to support the aviation requirements in the context of the work to define the future aeronautical communications infrastructure. In addition, the paper discusses the key issues that need to be addressed and describes a potential model that could contribute to the greater u...
0163-6804/99/$10.00 © 1999 IEEE e are in the midst of a global information revolution brought about by the evolution of digital technology. The enormous strides in digital technology and its applications have fundamentally changed the way in which information is generated, processed, stored, and transported. The resulting information infrastructure will produce profound changes in all aspects o...
Wireless communications system using stratospheric platform becomes the focus of world’s attention, since it would have lots of advantages over the conventional wireless communication infrastructure such as terrestrial and satellite communications systems. The research and development for putting the system to practical use is ongoing in some countries. This paper describes the results and the ...
In this paper we focus our attention in the main two methods of Cooperative Communications: Decode and Forward, and Amplify and Forward, and how they can be used in a new concept of Cooperative Satellite Communications. We present an analysis of both in terms of Symbol Error Rate and Power Allocation and analyze which would be more efficient when relaying information from the satellite to a mob...
A satellite communications system is based on antennas in a stable orbit above the earth. Satellites serve as relay stations in the sky. The basic idea of satellite communications is that two stations on earth discuss via one or more satellites. So a little bit of satellite-related terminology: 1. Earth station is an antenna on or near the surface of the earth. 2. Uplink is a transmission from ...
This paper presents a description of a method to allow software to automatically deconflict competing supports. It primarily consists of sets of business rules associated with sets of individual satellites that the rules apply to. Once defined, the business rules can be utilized in several different ways to achieve a 95% deconflicted solution as described in the results section. Planned future ...
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