DocumentCode :
2432350
Title :
The results of modeling of video pulses scattering by ground structures with continuous law of humidity variation
Author :
Masalov, S.A. ; Puzanov, O.O.
Author_Institution :
Inst. of Radiophys. & Electron., Acad. of Sci., Kharkov, Ukraine
fYear :
2000
fDate :
11-15 Sept. 2000
Firstpage :
249
Lastpage :
252
Abstract :
Modeling and analysis of video pulse scattering by natural multi-component aeration zones with thicknesses from 1.5 to 5.5 meters have been carried out. It is shown that water presence can be determined only by a reflection from a capillary band in the region contiguous with the water. One has to take into account this result for more exact determination of a depth of water occurrence in the ground. It is established that the pulse observed acquires a duration above a source pulse. The calculation results have shown that errors of measurements of frequency dependencies of permittivities and specific conductivities that are used as initial data then manifest calculation of the diffraction fields for structures of the large depth (that are more than 2-3 meters). In fact this error brines into existence a "false reflection" anteceding to reflections from a capillary band and water. As it is known, this constraint is established after the Kramers-Kronig relations. On this base the conclusion about the necessity of the refinement of source experimental data, is made in parallel instances.
Keywords :
electromagnetic wave reflection; electromagnetic wave scattering; humidity; modelling; permittivity; video signals; 1.5 to 5.5 m; capillary band; continuous law of humidity variation; diffraction fields; false reflections; frequency dependency; ground structure; modeling; natural multi-component aeration zones; permittivities; specific conductivities; video pulses scattering; water presence; Chromium; Helium; Humidity; IEEE catalog; Indium tin oxide; Microwave technology; Organizing; Scattering;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference, 2000. Microwave and Telecommunication Technology. 2000 10th International Crimean
Conference_Location :
Crimea, Ukraine
Print_ISBN :
966-572-048-1
Type :
conf
DOI :
10.1109/CRMICO.2000.1256091
Filename :
1256091
Link To Document :
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