FREQUENCY-DOMAIN INTERFEROMETRY ON SPACED ANTENNA MF RADAR

Citation
Woj. Brown et Gj. Fraser, FREQUENCY-DOMAIN INTERFEROMETRY ON SPACED ANTENNA MF RADAR, Radio science, 31(5), 1996, pp. 1077-1088
Citations number
25
Categorie Soggetti
Telecommunications,"Engineering, Eletrical & Electronic
Journal title
ISSN journal
00486604
Volume
31
Issue
5
Year of publication
1996
Pages
1077 - 1088
Database
ISI
SICI code
0048-6604(1996)31:5<1077:FIOSAM>2.0.ZU;2-R
Abstract
Frequency domain interferometry (FDI) experiments were carried out on two medium frequency spaced antenna radars located in New Zealand and the Antarctic. These experiments were the first spaced antenna FDI exp eriments on MF radar and allowed simultaneous measurements of wind, an gular distribution, spatial interferometry, FDI range, and scattering depth to be made. It was found that when correcting the FDI scattering depths for the scale of the radar volumes, typically large on MF rada rs, the adjustment should include a measure of the aspect sensitivity of the scattering. FDI provides a means of clearly identifying thin la yers, and the occurrence of such layers often appeared here to be rela ted to fluctuations in the wind. A very interesting example was a thin layer event that seemed to be closely related to a reversal of the wi nd apparently caused by a change in phase of the semidiurnal tide; enh anced turbulence following the event suggested breaking of the wave. M ultiple frequency steps were used and, with analysis by frequency corr elation functions, revealed the occasional presence of multiple scatte ring features in the radar volume.