Propagation measurements for land-mobile satellite systems at 1542 MHz / by J.S. Butterworth. : Co24-3/8-723-1984E-PDF
"A measurement program was undertaken with the objective of providing engineering design data on excess path-loss for potential land-mobile satellite systems operating in the 1500 MHz band. In the suburban and rural areas which could be served by such a system, fading due to multipath propagation and shadowing by terrain obstacles were the two phenomena characterized. Using an omni-azimuth vehicle antenna to receive a signal at 20 degrees elevation from the MARECS A satellite, the diffuse multipath signals were found to be 10 dB less than the direct component. The percentage of shadowed locations on the test routes varied from 5% in open farmland to 33% in suburban locations. The corresponding signal margins required to provide 99% coverage over the various test routes ranged from 12 dB to 21 dB"--Abstract, page 1.
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| Ministère/Organisme | Communications Research Centre (Canada), issuing body. |
|---|---|
| Titre | Propagation measurements for land-mobile satellite systems at 1542 MHz / by J.S. Butterworth. |
| Titre de la série | CRC technical note ; no. 723 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | "Mobile Studies Group, Directorate of Space Systems." "August 1984." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Some pages rotated in this copy. Includes bibliographical references (page 10). Issued also in print format. |
| Information sur la publication | Ottawa : Communications Research Centre, 1984. |
| Auteur / Contributeur | Butterworth, J. S., author. |
| Description | 1 online resource (30 pages) : illustrations. |
| Numéro de catalogue |
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| Descripteurs | Mobile communication systems. Artificial satellites in telecommunication. Radio wave propagation -- Measurement. Radiocommunications mobiles. Satellites artificiels dans les télécommunications. Ondes radioélectriques -- Propagation -- Mesure. |
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