Role Of Parameter Estimation And Correlation Techniques In Remote Imaging With Emphasis On Signal Attenuation In Varied Media.

Ferial El-Hawary

doi:10.1117/12.945828

14 July 1988 Role Of Parameter Estimation And Correlation Techniques In Remote Imaging With Emphasis On Signal Attenuation In Varied Media.

Ferial El-Hawary

Author Affiliations +

Proceedings Volume 0927, Wave Propagation and Scattering in Varied Media; (1988) https://doi.org/10.1117/12.945828
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

Abstract

Remote imaging in varied media is strikingly similar to a number of other application areas, including underwater exploration using the shallow seismic technique. As a result, techniques available for marine geophysical signal processing using underwater acoustic methods for seismic signal analysis and interpretation on the basis of reflections and multiple reflections from the sea-bed and the underlying media are described in the paper. This is done with a view to possible transfer of some useful procedures to the remote imaging area. The main problem of marine seismic exploration is briefly described. We focus our attention on model for the case involving attenuation effects. We present a frequency domain model and discuss an iterative technique for extracting the parameters of the model of the process. The process of relating signal model parameters to physical properties of the media traversed is discussed. Emphasis is given to the role of peak detection and parameter estimation in enhancing the identification process. A number of information extraction algorithms that are central to the interpretation process are presented. In particular, we treat delay and amplitude parameter estimation using two methods. In the first, a combined cross-correlation minimum variance filter is employed. In the second a linearized recursive estimation process is useful in the parameter estimation task.

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Ferial El-Hawary "Role Of Parameter Estimation And Correlation Techniques In Remote Imaging With Emphasis On Signal Attenuation In Varied Media.", Proc. SPIE 0927, Wave Propagation and Scattering in Varied Media, (14 July 1988); https://doi.org/10.1117/12.945828

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