Sharma A.K.,Remote Sensing Application Center |
Shukla J.P.,Advanced Materials and Processes
International Journal of Earth Sciences and Engineering | Year: 2014
The Remote Sensing data combined with Geographical Information System (GIS) techniques has been proved to be very efficient in identification of groundwater potential of any area. In the present paper, Indian Remote Sensing Satellite-1D (IRS-1D), Linear Image Scanning System-III (LISS-III) data has been used to identify the groundwater prospects zones by integrating various thematic maps generated on 1:50 000 scale. These maps are integrated after assigning weight factors to the identified features in each thematic map depending upon their relevance to infiltration, and the groundwater potential zones in & around Ambikapur town, Surguja district, Chhattisgarh, India are demarcated. The area of investigation has been classified into five groundwater potentials zones. The present results show that integration of all attributes provides more accurate results in groundwater potential zones identification. © 2014 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.
Milenov P.,Remote Sensing Application Center |
Milenov K.,University of Architecture
GIM International | Year: 2014
Although experts are making a considerable effort to provide a clear defi nition of high nature value farmland (HNVF), its complexity prevents the establishment of a straightforward approach to inventory and change-monitoring in such areas. The recently developed approach to generating detailed land cover information by integrating Copernicus Earth observation data with national in-situ datasets, such as the Land Parcel Identifi cation System1, enables a more rigorous description of HNVF areas, from their decomposition down to the land cover features they contain.
Singh R.,Motilal Nehru National Institute of Technology |
Singh A.K.,Motilal Nehru National Institute of Technology |
Arya R.K.,Remote Sensing Application Center
Expert Systems | Year: 2013
Shunt active power filters have been widely used for power quality improvement. With the advancement in artificial intelligence techniques, the applications of fuzzy logic-based control systems have increased manifolds. This paper proposes a reduced rule fuzzy logic controller (FLC) in the voltage control loop of a shunt active power filter (APF), which is approximating a conventional large rule FLC. The difference between the controlled outputs of two controllers is compensated by proposed compensating factors. The dynamic response and harmonic compensation performance of proposed 4-rule approximated fuzzy logic controller (AFLC) is compared with 25-rule FLC. A three-phase shunt APF is used for harmonic and reactive power compensation. The proposed scheme is tested with randomly varying single and multiple non-linear loads. The simulation results presented under transient and steady-state conditions confirm that the proposed 4-rule AFLC efficiently approximates the 25-rule FLC. The proposed control methodology takes less computational time and computational memory as the numbers of rules are reduced significantly. © 2012 Wiley Publishing Ltd.
Domiri D.D.,Remote Sensing Application Center
34th Asian Conference on Remote Sensing 2013, ACRS 2013 | Year: 2013
The drought phenomena always occurs at paddy field of Java Island, especially in summer season. Together with flood, the drought phenomena cause decrease of rice production. This research is aimed to develop a model of land moisture (LM) estimation at agricultural land, especially for paddy field based on MODIS (Moderate Resolution Imaging Spectroradiometer) satellite data which have reflective reflectances and thermal (LST = Land Surface Temperature) band. The result show that reflectances of 2nd channels (NIR) and rasio of Enhanced Vegetation Index (EVI) with LST (EVI/LST) have high correlations with surface soil moisture (% weight) at 0 - 20 cm depth with formula : LM = 15.9*EVI/LST - 0.934*R2 - 16.8. The model result in this research is better (has higher correlation) than model before which only used reflectances band combination. Based on the above model, land moisture can be derived spatially at the agricultural land, especially at paddy field to detect and monitor drought event.
Pirasteh S.,University Putra Malaysia |
Pradhan B.,TU Dresden |
Rizvi S.M.,Remote Sensing Application Center
Arabian Journal of Geosciences | Year: 2011
In this study, a digital elevation model was usedfor hydrological study/watershed management, topography,geology, tectonic geomorphology, and morphometric analysis.Geographical information system provides a specializedset of tools for the analysis of topography, watersheds,and drainage networks that enables to interpret the tectonicactivities of an area. The drainage system maps of ZagrosMountains in southwest Iran have been produced usingmulti-temporal datasets between 1950 and 2001 to establishthe changes between geomorphic signatures and geomorphicaspect during time and to correlate them with recentneo-tectonics. This paper discusses the role of drainage forinterpreting the scenario of the tectonic processes as one ofimportant signatures. The study shows variation in drainagenetwork derived from topography maps. Thus, changes indrainage pattern, stream length, stream gradient, and thenumber of segment drainage order from 1950 to 2001indicate that Zagros Mountain has been subjected to recentneo-tectonic processes and emphasized to be a newly activezone. © Saudi Society for Geosciences 2009