00000000nam 2200000zi 4500
0019.892612
003CaOODSP
00520221107173223
006m     o  d f      
007cr bn|||||||||
008201020s1980    onca    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn---
0861 |aCo24-3/8-702-1980E-PDF
1001 |aVenier, G. O., |eauthor.
24513|aAn investigation of HF direction-finding accuracy on the Churchill-Ottawa auroral zone path / |cby G.O. Venier.
264 1|aOttawa : |bCommunications Research Centre, |c1980.
300 |a1 online resource (iii, 24 pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCRC technical note ; |vno. 702
500 |a"Radio and Radar Research Branch."
500 |a"July 1980."
500 |a"This work was sponsored by the Department of National Defence, Research and Development Branch under Project No. 33G00."
500 |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada].
500 |aSome pages rotated in this copy.
504 |aIncludes bibliographical references (pages 20-21).
5203 |a"The CRC HF Direction-Finding Array, consisting of a 1181 meter by 236 meter cross, was used to make angle-of-arrival measurements on HF waves propagated over a 1900 km path from Churchill, Manitoba to Ottawa, in May, 1976. This path is of interest because much of it is in the auroral zone where conditions are generally more disturbed than at lower latitudes. Swept-frequency transmissions allowed the investigation of the variations in angle of arrival of individual propagation modes, while fixed-frequency transmissions permitted a test of two azimuth-estimation schemes. One of these used a phase-front planarity test and averaging of azimuths over relatively frequent samples, while the other was based on the separation of modes by Doppler processing, The former technique was found to provide slightly better accuracy than the latter on this path, and both compared well in accuracy with estimates from separated modes using swept-frequency data"--Abstract, page 1.
530 |aIssued also in print format.
650 0|aIonospheric radio wave propagation|xMeasurement.
650 0|aRadio direction finders.
650 6|aOndes radioélectriques|xPropagation dans l'ionosphère|xMesure.
650 6|aRadiogoniomètres.
7102 |aCommunications Research Centre (Canada), |eissuing body.
830#0|aCRC technical note ;|vno. 702.|w(CaOODSP)9.882494
85640|qPDF|s1.24 MB|uhttps://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-8-702-1980-eng.pdf