2014 Issue №10

Some results of numerical simulating of the problem of detecting of ultraweak diffractors in a complex acoustical medium are represented. The term “ultraweak” here means that the diffractors are not determined by standard depth migration. To solve the problem of detecting we use two procedures: Reverse Time Datuming (RTD) and Common Scattering Point (CSP). The first procedure (RTD) extends (synthetic) wave field from the day surface down to some level that is sufficiently close to diffractors. Then the diffractors are determined by CSP-method. The numerical model of an acoustical medium and synthetic data were obtained in Shell company. Further processing has been performed in RIAIMG of Immanuel Kant Baltic Federal University.

Discusses the issues of control accuracy for solving the inverse kinematics problem of microseismic. This problem is to determine coordinates of acoustic emission sources. Investigate questions of constructing optimal algorithms and the influence of noise in the data on the stability of the obtained solution. Demonstrate the effectiveness of this approach in comparison with generic algorithms without estimation of optimal parameters of the solution.

Possibilities of application segmentation algorithms and classification of satellite radar images without deleting a speckle noise for separation of connected areas are considered. The segmentation algorithm Merge Using Moments is optimum for separation of specific composition of forest on multitemporal radar data for some vegetative periods in development of the deciduous, coniferous and mixed forest. For exact separation of water objects use of radar data of one year suffices.

Results of an assessment of resources of a field with fracture and cavernous type of a collector are given. The technique of complex interpretation of seismic data on the CSP method is described, allowing to receive such important parameters, as the area of distribution of a fracture collector and its thickness. Importance of exact definition of a form and the size of deposits in carbonates and granites for a correct assessment of potential of a field is proved.

Information-software solutions applied to creation of geoportal of the Center of space services of the Kaliningrad region are presented. The software with open codes (GeoNetwork — for creation and work with metadata, Geo-Server — for publication of geodata, PostGreSQL — for storage of geodata) and open formats (WMS, WFS, KML) for the publication of geodata was used. Structures of NoSQL tables for storage and management of full text and spatial indexes, and also structure of query to tables are described.