Loading...
Please wait, while we are loading the content...
Similar Documents
Channel characterisation for future ka-band mobile satellite systems and preliminary results
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Buonomo, Sergio Sforza, Mario Arbesser-Rastburg, Bertram |
| Copyright Year | 1994 |
| Description | Mobile satellite systems (MSS) are presently designed or planned to operate, with the exception of OMNITRACKS, in the lower part of the frequency spectrum (UHF to S-bands). The decisions taken at the last World Administrative Radio Conference in 1992 to increase the allocated L- and S-bands for MSS services will only partly alleviate the problem of system capacity. In addition the use of L-and S-band frequencies generally requires large antenna apertures on board the satellite terminal side. The idea of exploiting the large spectrum resources available at higher frequencies (20-30 GHz) and the perspective of reducing user terminal size (and possibly price too) have spurred the interest of systems designers and planners. On the other hand, Ka-band frequencies suffer from increased slant path losses due to atmospheric attenuation phenomena. The European Space Agency (ESA) has recently embarked on a number of activities aimed at studying the effect of the typical mobile propagation impairments at Ka-band. This paper briefly summarizes ESA efforts in this field of research and presents preliminary experimental results. |
| File Size | 1482969 |
| Page Count | 29 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950008262 |
| Archival Resource Key | ark:/13960/t1tf4qs2g |
| Language | English |
| Publisher Date | 1994-08-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Microwave Antennas Extremely High Frequencies Mobile Communication Systems Wave Propagation European Space Agency Apertures Superhigh Frequencies Atmospheric Attenuation Radio Receivers Radio Transmission Radio Communication Satellite Communication Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
