Spectral parameter estimation of CAT radar echoes in the presence of fading clutterThe analysis technique and a part of the results obtained from CAT radar echoes from higher troposphere and lower stratosphere are presented. First, the effect of processing distortion caused by the periodogram method using FFT algorithm on the slowly fading ground clutter echo is discussed. It is shown that an extremely narrow clutter spectrum can spill over the entire frequency range if the data are truncated at a tie sorter than their correlation time affecting largely the estimation of the CAT spectrum contribution, especially when the latter is a few tens of dB weaker than the former. A nonlinear least squares fitting procedure is used to parameterize the observed power spectrum in terms of CAT echo power, Doppler shift, spectral width, and the parameters which specify the shape of the clutter component.
Document ID
19820026743
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Sato, T. (Arecibo Ionospheric Observatory Arecibo, Puerto Rico)
Woodman, R. F. (Arecibo Observatory Arecibo, PR, United States)