VLF PROPAGATION MEASUREMENTS IN THE CANADIAN ARCTIC

Authors
  1. Lauber, W.R.
  2. Bertrand, J.M.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
For the past three years, during a period of high sun spot numbers, propagation measurements have been made on the reception of VLF signals in the Canadian Arctic. Between August and December 1989 the received signal strengths were measured on the Canadian Coast Guard icebreaker, John A. MacDonald in The Eastern Canadian Arctic. Between July 1991 and June 1992 the received signal strengths were measured at Nanisivik, Baffin Island. The purposes of this work were to check the accuracy and estimate variances of the Naval Ocean Systems Center's (NOSC) Long Wave Propagation Capability (LWPC) predictions in the Canadian Arctic and to gather ionospheric storm data. In addition the NOSC data taken at Fort Smith and our data at Nanisivik were used to test the newly developed Longwave Noise Prediction (LNP) program and the CCIR noise predictions, at 21.4 and 24.0 kHz. The results of the work presented and discussed in this paper show that in general the LWPC predicts accurate values of received signal strength in the Canadian Arctic with standard deviations of 1 to 2 dB over several months. Ionospheric storms can cause the received signal strengths to decrease some 10 dB for a period of several hours or days. However, the effects of these storms are highly dependent on the propagation path. TRUNCATED
Report Number
AGARD-CP-529-PAP-5 — Conference Paper; CONTAINED IN DSIS 93-04078
Date of publication
01 May 1993
Number of Pages
12
DSTKIM No
93-04073
CANDIS No
132413
Format(s):
Originator's fiche received by DSIS

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