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| 02583nam 2200421zi 4500 |
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| 001 | 9.892622 |
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| 003 | CaOODSP |
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| 005 | 20221107173225 |
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| 006 | m o d f |
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| 007 | cr bn||||||||| |
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| 008 | 201020s1984 onca ob f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 086 | 1 |aCo24-3/8-723-1984E-PDF |
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| 100 | 1 |aButterworth, J. S., |eauthor. |
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| 245 | 10|aPropagation measurements for land-mobile satellite systems at 1542 MHz / |cby J.S. Butterworth. |
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| 264 | 1|aOttawa : |bCommunications Research Centre, |c1984. |
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| 300 | |a1 online resource (30 pages) : |billustrations. |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aCRC technical note ; |vno. 723 |
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| 500 | |a"Mobile Studies Group, Directorate of Space Systems." |
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| 500 | |a"August 1984." |
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| 500 | |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada]. |
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| 500 | |aSome pages rotated in this copy. |
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| 504 | |aIncludes bibliographical references (page 10). |
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| 520 | 3 |a"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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| 530 | |aIssued also in print format. |
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| 650 | 0|aMobile communication systems. |
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| 650 | 0|aArtificial satellites in telecommunication. |
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| 650 | 0|aRadio wave propagation|xMeasurement. |
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| 650 | 6|aRadiocommunications mobiles. |
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| 650 | 6|aSatellites artificiels dans les télécommunications. |
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| 650 | 6|aOndes radioélectriques|xPropagation|xMesure. |
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| 710 | 2 |aCommunications Research Centre (Canada), |eissuing body. |
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| 830 | #0|aCRC technical note ;|vno. 723.|w(CaOODSP)9.882494 |
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| 856 | 40|qPDF|s965 KB|uhttps://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-8-723-1984-eng.pdf |
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