نتایج جستجو برای: satellite link
تعداد نتایج: 268260 فیلتر نتایج به سال:
Satellite communication is one of the most popular next generation communication technologies for global communication networks in parallel to terrestrial communication networks. In modern age military intelligence, navigation & positioning, weather forecasting, digital video Broadcasting (DVB), and broadband internet services, are the few demanding applications of Satellite communication. Alth...
The research used the satellite image (Landsat 7 ETM ) within the thermal infrared sixth band (TIR6) and geographic information system (GIS) to determine the air pollution and its relationship with the land cover (LC) and land use (LU) of Baghdad city. Concentration of total suspended particles (TSP), lead (Pb), carbon oxides (CO, CO2), and sulphur dioxide (SO2) were obtained from 22 ground mea...
The performance of the Multicast Dissemination Protocol (MDP) in a simulated satellite channel is investigated. The environment that is modeled is that to be expected in a small satellite communications environment including channel errors and link interruptions. The satellite link is simulated with a channel environment simulator. The performance of MDP is compared with file transfer protocol ...
The performance of the Multicast Dissemination Protocol (MDP) in a simulated satellite channel is investigated. The environment that is modeled is that to be expected in a small satellite communications environment including channel errors and link interruptions. The satellite link is simulated with a channel environment simulator. The performance of MDP is compared with file transfer protocol ...
In this paper, we present physical layer and system level techniques that can increase the capacity of a multi-beam high throughput satellite (HTS) communication system. These include advanced predistortion and equalization techniques for the forward link, synchronization and non-linear distortion minimization techniques for the return link waveforms. Interference management techniques such as ...
This paper presents and evaluates signaling schemes for distributing information about the state of the network in a constellation of non geostationary satellites. Because routing decisions are more accurate when the state of the network is taken into account, it is necessary to devise signaling schemes that transport such state information without giving away too much network capacity.
The Space Tethered Autonomous Robotic Satellite (STARS) is being developed in Kagawa University and it will be launched by the H-IIA rocket by Japan Aerospace Exploration Agency (JAXA) in summer 2007. The main purpose of the STARS is technical verification for a tethered space robot proposed in 1995. The STARS consists of mother and daughter satellites connected by tether. The mother satellite ...
iii To my caring parents who are my inspiration To my graduate advisor who is a remarkable mentor iv Acknowledgements I would like to extend my sincere and utmost gratitude to Dr. Victor Frost, my advisor and committee chair for his invaluable guidance and inspiration throughout my research. I would like to thank him for giving me the opportunity to work on this project, which is his brainchild...
In this paper we show how it might be possible to adapt asynchronous transfer mode technology to satellite links. Asynchronous transfer mode is a high-speed protocol designed with optic ber as the intended transmission media. Several problems arise when satellite channels are used. We propose to move the error recovery and detection from one layer of the asynchronous transfer mode protocol to a...
با توجه به اینکه بخش اعظم زیرساخت ارتباطی شبکه جهانی اینترنت تاکنون متشکل از شبکه زمینی (زوج سیم مسی و یا فیبر نوری) بوده است, طراحی لایه های مختلف شبکه و بهبودهای ارایه شده برای پروتکل ها و مکانیزم های مورد استفاده آنها اغلب با توجه به شرایط و خصوصیات لینکهای زمینی صورت گرفته است. اما با پیشرفت تکنولوژی در زمینه مخابرات ماهواره ای و گسترش استفاده از لینکهای ماهواره در شبکه اینترنت, برای دستیاب...
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