Please use this identifier to cite or link to this item:
|Title:||Observations of Doppler and delay spreads on HF signals received over polar cap and trough paths at various stages of the solar cycle|
|Authors:||Stocker, A. J.|
Warrington, E. Michael
Siddle, D. R.
|Publisher:||American Geophysical Union (AGU)|
|Citation:||Radio Science, 2013, 48 (5), pp. 638-645|
|Abstract:||Information on delay and Doppler spreading is of importance to designers and operators of digital communication systems within the HF band since modem performance rapidly deteriorates when delay and Doppler spreads exceed system dependent thresholds. The northerly ionosphere is a particularly challenging region in this regard as delay and Doppler spreads often significantly exceed those for similar length paths at midlatitudes. This paper presents results from an extensive set of measurements undertaken over three northerly paths: two subauroral paths aligned along the midlatitude trough (Uppsala to Bruntingthorpe and Nurmijärvi to Bruntingthorpe) and one path (Qaanaaq to Ny-Ålesund) contained entirely within the polar cap. Measurements span the period from the 2009 solar minimum to July 2012, close to solar maximum and 2001, close to the previous solar maximum.|
|Rights:||Copyright © 2013 The Authors. Radio Science published by Wiley on behalf of the American Geophysical Union. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.|
|Appears in Collections:||Published Articles, Dept. of Engineering|
Files in This Item:
|rds20067.pdf||Published (publisher PDF)||686.87 kB||Unknown||View/Open|
Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.