FREQUENCY-DOMAIN INTERFEROMETRY USING THE 1290-MHZ SONDRE STROMFJORD RADAR - 1ST RESULTS

First results from the implementation of frequency domain interferomet ry (FDI) using an L-band frequency of 1290 MHz are presented, To our k now[edge, FDI has not previously been applied to such high-frequency m easurements. The experiment was conducted in September 1991 using the radar facility located in Sondre Stromfjord, Greenland. The Sondre Str omfjord radar is typically used for incoherent scatter measurements in the ionosphere, but these are some of the first lower-atmospheric res ults, namely, 8.6-13.4 km, since the new data-taking system was implem ented. At the time of the experiment, the steerability of the 32-m dis h antenna was hampered because of a faulty elevation-scanning bearing, Therefore, the measurements were taken from an approximately vertical direction for the duration of the experiment. The spectra and the cor relation functions obtained from the FDI data are compared to previous results at other frequencies. The data show the Sondre Stromfjord rad ar is providing reliable wind measurements in the lower atmosphere and that FDI can be implemented at L band.