MODELING OF SPATIAL PARAMETERS OF THE OBJECT BY ELECTRICAL PROFILING DATA
A method for determining the spatial parameters (a range of depths and boundaries in the plan) of buried in the soil search objects according to electrical data is proposed. This method is based on more detailed measurements of electric properties of soil necessary for the construction of vector pictures of the main directions of soil resistance changes and the apparent resistivity distribution maps (a set of horizontal «sections»). According to a measurement technique each of the received images corresponds to a certain depth of a research. The vector analysis of electrical data is carried out due to a consecutive application of function of a scalar product to two vector pictures, adjacent on depth. The continuity and closeness of the domain of the maximum values of the scalar product is a sign of the presence of the object in the current range of depths of a research. The fuzzy c-mean algorithm was used to select this domain. The information obtained as a result of vector analysis of electrical data about the location of the object in the host soil is used as a priori information for choosing the most informative depths of the research for carrying out multispatial electric profiling. By results of multispatial electric profiling, a set of horizontal «sections» corresponding to the obtained estimation of the depth range of the search object is constructed. On each of apparent resistivity distribution maps from such set, the boundary of the object in the plan is modeled. Modeling is carried out using a fuzzy C-means algorithm. The effectiveness of the proposed method for determining the spatial parameters (the range of depths and boundaries of the object in the plan on a set of horizontal «sections») is shown by the example of the study of the archaeological site - Kushmanskoe III settlement. Modeling of a form of the intended object of the search allowed to uniquely interpret a source of origin of the revealed anomaly. The resulting interpretation is consistent with the later archaeological excavations.