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008201020s1984    onca    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0861 |aCo24-3/8-723-1984E-PDF
1001 |aButterworth, J. S., |eauthor.
24510|aPropagation measurements for land-mobile satellite systems at 1542 MHz / |cby J.S. Butterworth.
264 1|aOttawa : |bCommunications Research Centre, |c1984.
300 |a1 online resource (30 pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCRC technical note ; |vno. 723
500 |a"Mobile Studies Group, Directorate of Space Systems."
500 |a"August 1984."
500 |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada].
500 |aSome pages rotated in this copy.
504 |aIncludes bibliographical references (page 10).
5203 |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.
530 |aIssued also in print format.
650 0|aMobile communication systems.
650 0|aArtificial satellites in telecommunication.
650 0|aRadio wave propagation|xMeasurement.
650 6|aRadiocommunications mobiles.
650 6|aSatellites artificiels dans les télécommunications.
650 6|aOndes radioélectriques|xPropagation|xMesure.
7102 |aCommunications Research Centre (Canada), |eissuing body.
830#0|aCRC technical note ;|vno. 723.|w(CaOODSP)9.882494
85640|qPDF|s965 KB|uhttps://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-8-723-1984-eng.pdf