Application of spectral analysis in the remote sensing of marine geological deposits and in the detection of periodicities in the sedimentation processes in continental geological systems (part 2)
Van Overloop, E. (1990). Application of spectral analysis in the remote sensing of marine geological deposits and in the detection of periodicities in the sedimentation processes in continental geological systems (part 2), in: UniversiTECH 90: Remote sensing techniques and global change research. Seminar 30-31 March 1990. pp. 15-19 In: (1990). UniversiTECH 90: Remote sensing techniques and global change research. Seminar 30-31 March 1990. Vrije Universiteit Brussel: Brussel. 6 p. abstracts, 19 p. pp., more |
| Abstract | An Expert System has been designed for the spectrum estimation of avery broad area of signals or processes. It is well known that for very shortdata records, obtained from the sampling of stochastic processes, the use ofclassical spectrum estimators, such as the methods originated from theDiscrete Fourier Transform, yield weak performances. Nowadays, morepowerful modern spectrum estimators are available [1], which are based on aparametric modelling approach. For instance, the AR, MA and ARMA modelsenable to estimate the Power Spectral Density of stochastic processes. Aframework for knowledge based spectral analysis is established at the VUB[2]. This study has lead to the design and implementation of an expert system,named ExSpect: an Expert System for Spectrum Estimation. A project, inwhich the use of ExSpect has shown to be a very useful tool, deals with theinvestigation of periodicities hidden in some geological parameters, obtainedfrom the processing of continental geological samples. |
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