Title :
Effect of F1-layer L condition on ranging accuracy for SSL HFDF systems
Author_Institution :
Dept. of Electr. & Electron. Eng., Pretoria Univ., South Africa
Abstract :
An extension of the multisegmented quasiparabolic model of ionospheric electron density to include the F1-layer L condition is described. Provisional results illustrating the effects of this on ranging estimates from single station location HFDF systems are discussed. It is concluded that a knowledge of actual ionospheric conditions at the time of observation are important for such systems to improve ranging estimates, especially when L conditions are present.
Keywords :
F-region; ionospheric electromagnetic wave propagation; radio direction-finding; radiowave propagation; F1-layer L condition; HF radio direction finding system; SSL HFDF systems; ionospheric electron density; multisegmented quasiparabolic model; ranging accuracy; ranging estimates; single station location;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921254
