
%0 Journal Article
%A Kirlin, R.L. 
%A Dewey, L.A. 
%A Bradley, J.N. 
%T Optimum seismic velocity estimators
%J Exploration Geophysics
%D 1984/12/01
%V 15
%N 4
%P 263-263
%K 
%R https://doi.org/10.1071/EG984263C
%U https://www.publish.csiro.au/paper/EG984263C 
%X Six 'optimum' estimators for the root-mean-square (rms) seismic velocity are given and analyzed by simulation for rms error. Two of the estimators are used to test use of a priori velocity information in a Kalman-type improvement on the time measurements. Parameters varied include centre-point depth (time), a priori velocity variance, and interdelay-estimate correlation. The maximum likelihood estimator is shown to be best when a priori information is relatively good, but a least-mean-square estimator is equally good otherwise. 
