00000000nam 2200000zi 4500
0019.954357
003CaOODSP
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008250821e199612  oncad   obt  f000|0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|beng|bfre
043 |an-cn---
0861 |aDR52-17/77-1996E-PDF
1001 |aRead, William J. L., |eauthor.
24510|aMultipath modelling for terrestrial VHF radio direction finding (U) / |cby William Read.
264 1|aOttawa : |bDefence Research Establishment Ottawa, |cDecember 1996.
300 |a1 online resource (1 volume (various pagings)) : |billustrations, charts.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aDREO report ; |vno. 1300
500 |aDigitized edition from print [produced by Defence Research and Development Canada].
500 |a"Project 5BD12."
504 |aIncludes bibliographical references.
520 |a"This report details the development of computer models to investigate and explain the effects of multipath on VHF radio direction finding (DF). The motivation for this development was to help explain the large and small scale multipath effects which occur for changes in transmitter and receiver position, or for changes in frequency. This is particularly important when analyzing the capabilities of current wide and narrow band DF methods, or when developing new DF methods. The development of the computer models is based on representing the terrain and vegetation affecting the signal by a large number of small (relative to the signal wavelength) isotropic reradiators. Polarization effects are not accounted for. Although this kind of approach can quickly become a computationally daunting task, a number of simplifications are introduced which greatly simplify the calculations. Two examples have been included illustrating the use of the proposed approach in the analysis and modelling of real world measurements"--Abstract, page iii.
546 |aIncludes abstracts in English and French.
650 0|aRadio|xInterference|xComputer simulation.
650 0|aRadio wave propagation|xMeasurement.
650 6|aRadio|xBrouillage|xSimulation par ordinateur.
650 6|aOndes radioélectriques|xPropagation|xMesure.
7102 |aDefence Research Establishment Ottawa, |eissuing body.
830#0|aDREO report ;|vno. 1300.|w(CaOODSP)9.941661
85640|qPDF|s3.90 MB|uhttps://publications.gc.ca/collections/collection_2025/rddc-drdc/DR52-17-77-1996-eng.pdf
986 |aProject 5BD12