Premium
Reduction of ambiguities in HF radar results through a revised receiving antenna array and sounding pattern
Author(s) -
Jarvis M. J.,
Dudeney J. R.
Publication year - 1986
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs021i001p00151
Subject(s) - depth sounding , remote sensing , pulse repetition frequency , aliasing , dipole antenna , radar , dipole , antenna (radio) , physics , geology , doppler effect , acoustics , optics , computer science , telecommunications , astronomy , oceanography , quantum mechanics , undersampling
The reconfiguration of both the receiver dipole array and the pulse set used by the National Oceanic and Atmospheric Administration (NOAA) HF radar enables all ambiguity in polarization to be removed. Further, it enables the aliasing of Doppler velocities to be reduced by a factor of 2, which allows more flexibility in the pulse repetition rate used and permits lower velocities to be detected above the noise. The revised four‐dipole array is L ‐shaped, with a crossed dipole at the corner. The addition of two extra dipoles provides the facility for unambiguous “sky map” echo location.