Stochastic Maximum Likelihood (SML) parametric estimation of overlapped Doppler echoes

Details Stochastic Maximum Likelihood (SML) parametric estimation of overlapped Doppler echoes Stochastic Maximum Likelihood (SML) parametric estimation of overlapped Doppler echoes

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004angeo..22.3983b&link_type=abstract

Annales Geophysicae, vol. 22, Issue 11, pp.3983-3993

Astronomy and Astrophysics

Astronomy

2

Scientific paper

This paper investigates the area of overlapped echo data processing. In such cases, classical methods, such as Fourier-like techniques or pulse pair methods, fail to estimate the first three spectral moments of the echoes because of their lack of resolution. A promising method, based on a modelization of the covariance matrix of the time series and on a Stochastic Maximum Likelihood (SML) estimation of the parameters of interest, has been recently introduced in literature. This method has been tested on simulations and on few spectra from actual data but no exhaustive investigation of the SML algorithm has been conducted on actual data: this paper fills this gap. The radar data came from the thunderstorm campaign that took place at the National Astronomy and Ionospheric Center (NAIC) in Arecibo, Puerto Rico, in 1998.

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