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All Journal IJISTECH (International Journal Of Information System & Technology) IJISTECH
Satoshi Iwakami
Earth Rise Co. Ltd., Okayama, Japan
Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Social Sciences

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Numerical Techniques for Underwater Topographic Measurement with GPS and Echo Sounder Satoshi Iwakami; Masahiko Tamega; Shuji Jimbo; Masaji Watanabe
IJISTECH (International Journal of Information System and Technology) Vol 3, No 1 (2019): November
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/ijistech.v3i1.37

Abstract

This study demonstrates numerical techniques for a topographic study of a water area. Data obtained by a GPS unit and an echo sounder were combined, and three dimensional data were generated. A problem to find a surface that contains those data points was reformulated to a problem to find a piecewise linear continuous function defined over a triangular mesh. An iterative method led to an approximation of a fixed point. Those techniques are illustrated, and numerical examples are introduced.
Numerical Techniques for Underwater Topographic Measurement with GPS and Echo Sounder Satoshi Iwakami; Masahiko Tamega; Shuji Jimbo; Masaji Watanabe
IJISTECH (International Journal of Information System and Technology) Vol 3, No 1 (2019): November
Publisher : Sekolah Tinggi Ilmu Komputer (STIKOM) Tunas Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.036 KB) | DOI: 10.30645/ijistech.v3i1.37

Abstract

This study demonstrates numerical techniques for a topographic study of a water area. Data obtained by a GPS unit and an echo sounder were combined, and three dimensional data were generated. A problem to find a surface that contains those data points was reformulated to a problem to find a piecewise linear continuous function defined over a triangular mesh. An iterative method led to an approximation of a fixed point. Those techniques are illustrated, and numerical examples are introduced.
Co-Authors Masahiko Tamega Masaji Watanabe Shuji Jimbo