Earth resistivity estimation based on satellite imaging techniques

Authors:
Kwanchai Norsangsri;Thanatchai Kulworawanichpong
Affiliations:
School of Electrical Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand;School of Electrical Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Venue:
WSEAS TRANSACTIONS on SYSTEMS
Year:
2009

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Abstract

This paper proposes a useful technique for generating an earth resistivity map. Earth resistance is one of essential factors in a broad range of power system analysis and design. Information of earth resistivity is helpful for practical power system engineers in order to establish power system grounding. In this paper, a LANSAT7 image of a tested area of 50 km2 was used by ENVI program in associative with a set of resistivity data obtained from field measurement. By using the maximum likelihood for supervised classification of a mixed band 7, 5 and 3, highest value of 85.71% confidence was obtained.