EDGE DETECTION FOR PILE INTERPRETATION UNDER WISMA BNI USING GROUND PENETRATING RADAR

• Main Author: Aqlyn Fahdhia Athana, Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/57497
• Institution: Institut Teknologi Bandung

Ground Penetrating Radar is geophysical method for imaging the subsurface using electromagnetic wave. Electromagnetic wave transmitted by GPR transmitter toward subsurface and reflected by material under the soil toward GPR receiver. GPR method uses electric permittivity and electromagnetic wave speed for imaging condition under the soil. This method can be used for locating foundation under the soil on construction. Wisma BNI is currently working on leveling up their building. Therefore, they need to know the location of their piles to continue their construction. This study use GPR with frequencies of 100 MHz and 250 MHz. The results of processed GPR data based on each frequencies will be compared. Data is processed using MatGPR software with several steps to complete, such as Dewow Filter and Removal Global Background. The final processing step is to apply edge detection. The results of data processing show that the location of the piles on each 150 cm tracks are in the length of 25 - 50 cm and 100-125 cm, and the use of a frequency of 100 MHz gives clearer results for the interpretation of the location of the piles.