Authors: Abdelmajid Ben Hadj Salem
Comments: 10 Pages. In French.
In an article, E. Grafarend and B. Schaffrin studied the geometry of non-linear adjustment of the planar trisection problem using the Gauss Markov model and the method of the least squares. This paper develops the same method working on an example of the determination of a point by trilateration in the three-dimensional geodetic option for determining the coordinates (x, y, z) of an unknown point from measurements known distances to n points.
The goal of seismic processing is to convert input data collected in the field into a meaningful image based on signal processing and
wave equation processing and other algorithms. It is normally a global approach like tomography or FWI (full waveform inversion).
Seismic imaging or inversion methods fail partly due to the thin-lens effect or rough surfaces. These interfaces are non-invertible. To
mitigate the problem, we propose a more stable method for seismic imaging in 4 steps as layer stripping approach of INVERSION + DATUMING + STATIC + ENHANCEMENT.