نتایج جستجو برای: airborne magnetic data acquired from kalateh
تعداد نتایج: 6964059 فیلتر نتایج به سال:
Topography-induced variation of radar brightness still poses a problem in terms of radiometric calibration of SAR data, which is undoubtedly an indispensable step in order to deduce bioor geophysical parameters from amplitude images. We propose an integrated focusing and calibration procedure for airborne SAR data based on the time-domain backprojection technique. With the help of sensor positi...
Recently, various attempts have been undertaken to retrieve information about the three-dimensional structure of vegetation from multibaseline synthetic aperture radar data. Although tomographic processing of such data has been demonstrated, yet, there are still several problems that limit the focusing quality. In particular, the frequency-domain based focusing methods are susceptible to irregu...
The cost of the railway digital twinning process counteracts expected benefits resulting model. State-of-the-art methods yielded promising results, yet they could not offer large-scale required over kilometres without forfeiting precision and manual cost. proposed framework exploits potential topology to perform better when detecting modelling geometry elements in point clouds with varying geom...
this study aimed at examining the effects of iranian efl learners’ anxiety, ambiguity tolerance, and gender on their preferences for corrective feedback (cf, henceforth). the effects were sought with regard to the necessity, frequency, and timing of cf, types of errors that need to be treated, types of cf, and choice of correctors. seventy-five iranian efl students, twenty-eight males and forty...
In recent years, differential interferometry using space-borne SAR sensors has become an established technique for detecting and monitoring centimetre-scale deformations of the earth’s surface, as well as glacier flows and land slides. Although often very efficient, the use of space-borne SAR data has several drawbacks, namely phase artifacts caused by atmospheric effects and very low coherence...
The airborne geophysical data gamma-spectrometric and magnetic from Itatira Project (1977) was carried out, in the central region of the State of the Ceará, Brazil. Their processing produced products useful to indirectly identify regional geologic features. The verification and applicability of this approach was tested in a pilot-area whose limits are within the Umirim and Canindé topographic s...
A ncw approach to on-orbit satellite sensor calibration has becJl developed using the flight of a high altitude calibrated airborne imaging spectrometer below a multi-spectral satellite sensor. This strategy was in~plcrncnted on the 27th of August 1992 for the Optical Sensor (OPS) on board the Japanese Earth Rcsourccs Satellite-1 (JERS1 ) using NASA’s Airborne Visible-Infrared lmag,ing Spectrom...
Recently, A/H5N1 influenza viruses were shown to acquire airborne transmissibility between ferrets upon targeted mutagenesis and virus passage. The critical genetic changes in airborne A/Indonesia/5/05 were not yet identified. Here, five substitutions proved to be sufficient to determine this airborne transmission phenotype. Substitutions in PB1 and PB2 collectively caused enhanced transcriptio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید