Showing papers in "Mapping Sciences & Remote Sensing in 1996"
TL;DR: Methods for the interferometric processing of a pair of radar images recorded during successive passes of the very same terrain sector from different orbit trajectories are outlined.
Abstract: Phase fields recorded during the processing of reflected signals emitted from a side-looking airborne radar (SAR) on board the Almaz-1 spacecraft are analyzed. Methods for the interferometric processing of a pair of radar images recorded during successive passes of the very same terrain sector from different orbit trajectories are outlined. The results of interpretation of the recorded interferograms are evaluated with consideration of the basic characteristics of the radar signal and the generalized parameters of the observed terrain sector. The potential for determining relief elevations from surface interferograms and the level of retrieval error is assessed with allowance for phase noise.
4 citations
TL;DR: In this article, computer analysis of a database within a GIS for the Medvezhiy Glacier (central Asia) was performed for the purpose of obtaining information on changes in alpine glacier movements and size in a highland region.
Abstract: Computer analysis of a database within a GIS for the Medvezhiy Glacier (central Asia) is performed for the purpose of obtaining information on changes in alpine glacier movements and size in a high...
2 citations
TL;DR: In this paper, a comparative analysis of information obtained on total ozone content (TOC), using simultaneously recorded data from satellite (TOMS and SBUV instrumentation) and surface (D...
Abstract: Results are reported of a comparative analysis of information obtained on total ozone content (TOC), using simultaneously recorded data from satellite (TOMS and SBUV instrumentation) and surface (D...
1 citations
TL;DR: In this article, an algorithm for the elimination of cloud cover from imagery obtained from a NOAA satellite is described, which includes the processing of images in the near and far-IR ranges, as well as an analysis of the spatial discordance of the brightness temperature field registered by AVHRR channel 4.
Abstract: An algorithm for the elimination of cloud cover from imagery obtained from a NOAA satellite is described. Application of the method is illustrated using imagery of the Baltic Sea area. The method includes the processing of images in the near-and far-IR ranges, as well as an analysis of the spatial discordance of the brightness temperature field registered by AVHRR channel 4.
1 citations
TL;DR: It was determined that the system of technical-engineering structures constituting the flood protection system produced no fundamental change in the hydrologic regime of the waters of the Neva Inlet and the adjacent eastern Gulf of Finland.
Abstract: Results of space image interpretation for the St. Petersburg flood protection system over the period March 1973-June 1992 are presented. It was determined that the system of technical-engineering structures constituting the flood protection system produced no fundamental change in the hydrologic regime of the waters of the Neva Inlet and the adjacent eastern Gulf of Finland.
1 citations
TL;DR: In this article, a method for synthesizing images from different remote sensing devices having different levels of ground resolution is presented, which makes it possible to reduce the results of the results.
Abstract: The article outlines a method for synthesizing images from different remote sensing devices having different levels of ground resolution Such synthesis makes it possible to reduce the results of m
1 citations
TL;DR: Torrey et al. as mentioned in this paper presented a regional mapping of the long-term dynamics of desertification and degradation of lands in the Kalmyk Republic on the basis of aerial photographs and space imagery for 1954-1984 and 1954-1993.
Abstract: Experience in regional mapping of the long-term dynamics of desertification and degradation of lands in the Kalmyk Republic on the basis of aerial photographs and space imagery for 1954-1984 and 1954-1993 is reviewed. Using the index of change in the area of moving sands and deflation surfaces measured from the photographs and images, isarithms measuring the growth in their area (at an interval of 100 hectares/year/pixel) are plotted. The use of such dynamic isarithmic maps makes it possible to compute the areas of intense, strong, moderate, and weak desertification, as well as the absence of desertification within the limits of the region. Translated by Edward Torrey, Alexandria, VA 22308 from: Izvestiya Akademii Nauk, seriya geograficheskaya, 1996, No. 2, pp. 131-140.
1 citations
TL;DR: Comparison advantages and deficiencies of new methods for compression of optoelectronic space imagery (transform, wavelet, and fractal) are outlined and conclusions and recommendations are presented.
Abstract: The author outlines comparative advantages and deficiencies of new methods for compression of optoelectronic space imagery (transform, wavelet, and fractal). A formalized procedure for such comparison is described and conclusions and recommendations are presented.
TL;DR: The methodological problems encountered in geosystems modeling in an automated medium are discussed on the basis of general GIS applications in human geography and the basis for which is the symbiosis between a research geographer and a computer.
Abstract: The methodological problems encountered in geosystems modeling in an automated medium are discussed on the basis of general GIS applications in human geography. Geographic information modeling is examined as a new methodological paradigm, the basis for which is the symbiosis between a research geographer and a computer. Specific examples are used to demonstrate the potential for use of such modeling to solve basic and applied problems in social and economic geography. Translated by Edward Torrey, Alexandria, VA 22308 from: Izvestiya Akademii Nauk, seriya geograficheskaya, 1996, No. 2, pp. 124-130.
TL;DR: In this article, the authors developed a mathematical model to explain and predict the morphology of thermokarst lake plains, which has applications for the interpretation of such areas on space imagery.
Abstract: The author develops a mathematical model to explain and predict the morphology of thermokarst lake plains, which has applications for the interpretation of such areas on space imagery. It is determined that the spatial distribution of lakes can be regarded as random, and described by a Poisson distribution, whereas variations of lake diameters can be represented as a Wiener random process for the values of their logarithm. Interpretation keys are proposed for use in structural geology and engineering geology based on the patterns identified.
TL;DR: The author investigates the role of ecological mapping as a unifying factor in the geographical sciences with a focus on whether only current or past maps on environmental subjects may be considered “ecological.”
Abstract: The author investigates the role of ecological mapping as a unifying factor in the geographical sciences. Among the issues addressed include: (1) whether only current or past maps on environmental subjects may be considered “ecological,” (2) the role of human subjects of mapping both as agents of environmental change and biological species affected by it, (3) ecological mapping both as a theoretical concept and as a tool, (4) levels of interrelationship among environmental components and pollutants to be depicted on ecological maps, and (5) the need for meaningful regional units for statistical analysis. Translated by Edward Torrey, Alexandria, VA 22308 from: Izvestiya Rossiyskogo Geograficheskogo Obshchestva, Vol. 127, 1995, No. 6, pp. 18-23.
TL;DR: Analysis and choice of optimum conditions for a stereophotogrammetric survey are oriented toward facilitating the computer processing of radar images for the purpose of obtaining digital terrain models.
Abstract: An analysis is made of conditions believed to be optimum for a stereoscopic survey of the Earth's surface by a synthetic-aperture radar on board a spacecraft. Variants for construction of an orbiting stereosystem and factors contributing to a radiometric mismatch of stereopair images are examined. Analysis and choice of optimum conditions for a stereophotogrammetric survey are oriented toward facilitating the computer processing of radar images for the purpose of obtaining digital terrain models.
TL;DR: In this article, an analysis of data on the lineament network of the Kola Peninsula obtained through interpretation of space images at different scales provides an indication of the multifractality of lineament densities and the possibility of the geologic interpretation of the spectrum of fractal dimensions.
Abstract: Analysis of data on the lineament network of the Kola Peninsula obtained through interpretation of space images at different scales provides an indication of the multifractality of lineament densities and the possibility of the geologic interpretation of the spectrum of fractal dimensions. The invariance of the distribution of densities of images of the lineament network at small and large scales reveals the scaling properties of these structural elements, and objectively reflects the heterogeneity of the geologic medium.
TL;DR: In this article, the possibility of observation of dry and moist convection in the atmospheric layer above the water surface was examined and the cellular structures present on the imagery under conditions of instability in the atmosphere boundary layer did not appear on images recorded under stable atmospheric conditions.
Abstract: Atmospheric boundary-layer stratification exerts a considerable influence on side-looking radar imagery of the sea surface in the centimeter range. Characteristic cellular structures present on the imagery under conditions of instability in the atmospheric boundary layer do not appear on images recorded under stable atmospheric conditions. The possibility of observation of dry and moist convection in the atmospheric layer above the water surface is examined.