Navigation/surveillance satellite systems for aeronautical and mobile services

1970 ◽  
Author(s):  
M. MITCHELL
Keyword(s):  
Mobile Services ◽  
Satellite Systems

Earth stations for fixed and mobile services

1984 ◽  
Vol 312 (1519) ◽  
pp. 55-66
Keyword(s):  
Mobile Services ◽  
Political Factors ◽  
Operational System ◽  
Satellite Systems ◽  
The Past ◽  
Radiated Power ◽  
Mobile Stations ◽  
The Future ◽  
Technical Factors ◽  
Direct Broadcast

This paper discusses the evolution of fixed and mobile stations during the past two decades and extrapolates trends into the future. It is shown that for the various communications satellite systems discussed, i.e. international, domestic, maritime and direct broadcast, the terminal designs are controlled not only by technical factors but also by economic, organizational and political factors. . The net effect of these combined forces, while yielding less than optimum designs from a technical or economic viewpoint, has made for a remarkable growth in twenty years. From an experimental—operational system of four stations in 1965, which used a satellite with 10 W of effective radiated power, to, by 1990, millions of home television stations using a satellite of 200 kW effective radiated power per channel.

scholarly journals Radio Astronomy at WARC MOB-87

1991 ◽  
Vol 112 ◽  
pp. 296-304
Author(s):  
T. E. Gergely
Keyword(s):  
Radio Astronomy ◽  
Mobile Services ◽  
Radio Spectrum ◽  
Satellite Systems ◽  
The World ◽  
Mobile Satellite ◽  
Primary Basis ◽  
Similar Basis ◽  
Satellite Service ◽  
The Impact

ABSTRACTThe World Administrative Radio Conference for the Mobile Services (WARC Mob-87), held in Geneva in September-October, 1987, took several actions that will have an impact on radio astronomy. Worldwide frequency allocations were made for the Radiodetermination Satellite Service (RDSS) in the 1610 to 1626.5 MHz band. The secondary allocation to radio astronomy in this band has received strong protection, however. The 1660 to 1660.5 MHz band, which radio astronomy shared on a primary basis with the Aeronautical Mobile Satellite Service has been reallocated to the Land Mobile Satellite Service, shared with radio astronomy on a similar basis. The impact that this reallocation will have on radio astronomy is not clear. Since the Radioastronomy Service is primary in the band, Mobile Satellite Systems that evolve will have to provide adequate protection. Perhaps most significantly, WARC Mob-87 recommended that a conference be convened to reallocate all bands in the 1 to 3 GHz range, no later than in 1992. Several other conferences dealing with particular services have been proposed. At first glance, some of these some of these proposals may not appear to have an impact on radio astronomy. They will, however, increase the pressure on the entire radio spectrum. Finally, it is highly likely that a General WARC will be proposed to be held before the end of the 1990s. The radio astronomy community will have to prepare for these conferences.

Satellite Systems for Mobile Communications and Navigation

IEE Review ◽  
1989 ◽  
Vol 35 (8) ◽  
pp. 310
Author(s):  
B. Honary
Keyword(s):  
Mobile Communications ◽  
Satellite Systems

Improvement in The Handoff Performance for High Speed Mobile Services

2012 ◽  
Vol 2 (3) ◽  
pp. 172-174
Author(s):  
Hunny Pahuja ◽  
◽  
Shubhangani Sharma
Keyword(s):  
High Speed ◽  
Mobile Services

Development system of metrological maintenance for radio-navigation fields of satellite systems

2001 ◽  
Vol 7 (4) ◽  
pp. 122-125
Author(s):  
V.N. Roman'ko ◽  
◽  
E.N. Khomyakov ◽  
S.T. Cherepkov ◽  
◽  
...  
Keyword(s):  
Development System ◽  
Satellite Systems ◽  
Radio Navigation

Network and Protocol Architectures for Future Satellite Systems

2017 ◽  
Author(s):  
Tomaso de Cola ◽  
Alberto Ginesi ◽  
Giovanni Giambene ◽  
George C. Polyzos ◽  
Vasilios A. Siris ◽  
...  
Keyword(s):  
Satellite Systems
Sign in / Sign up

Export Citation Format

Share Document