RT Journal Article
A1 E.M. Warrington
A1 N.C. Rogers
A1 T.B. Jones

PB
T1 Large HF bearing errors for propagation paths contained within the polar cap
JN IEE Proceedings - Microwaves, Antennas and Propagation
VO 144
IS 4
SP 241
OP 249
AB Large electron-density gradients in the polar-cap ionosphere, associated with the convection of patches of overdense plasma and the presence of high-latitude auroral arcs, produce tilted reflecting surfaces which result in HF signals propagating over paths well displaced from the great circle. Measurements have been made at a very high-latitude receiving site of signals propagated over paths contained within the polar cap. Systematic swings in the bearing of the received signal of up to ±100° from the great circle path were recorded and their characteristics related to the directional components of the interplanetary magnetic field and the level of geomagnetic activity, as these geomagnetic parameters play an important role in determining the state of the high-latitude ionosphere.
K1 tilted reflecting surfaces
K1 directional components
K1 polar cap
K1 large HF bearing errors
K1 geomagnetic parameters
K1 great circle path
K1 geomagnetic activity
K1 high-latitude auroral arcs
K1 F-region ionosphere
K1 measurements
K1 HF signal propagation
K1 very high-latitude receiving site
K1 interplanetary magnetic field
K1 overdense plasma
K1 polar-cap ionosphere
K1 large electron-density gradients
K1 convection
K1 propagation paths
K1 high-latitude ionosphere
K1 received signal bearing
DO https://doi.org/10.1049/ip-map:19971187
UL https://digital-library.theiet.org/;jsessionid=2ib1higdgpg4v.x-iet-live-01content/journals/10.1049/ip-map_19971187
LA English
SN 1350-2417
YR 1997
OL EN