Computation Data of Side Scan Sonar Klein 3000 for Identification of Seabed Target

Abstract

Side scan sonar provides information on the topography of the seabed which is needed in a variety of marine applications such as secure channels for shipping, marine industry, pipeline survey and submarine cables, detection of mines, detection of fishing ground of demersal fish, the search for sunken ships, etc. This research can provide quantitative information in the form of the backscatter value in decibels of the object or target which is detected. The purpose of this study was to analyze the data side scan sonar in quantitative and qualitative as well as clarify the results of image processing of side scan sonar using continuous wavelet transform. The location of survey was located in the Sunda Strait on the coordinates 5° 40' 00" S - 6° 00' 00" S and 105° 40' 00" E - 106° 10' 00" E. Data processing was done at the Marine Acoustics Laboratory, Department of Marine Science and Technology, Bogor Agricultural University and the Center for Research and Development of Marine Geology (PPPGL) in Bandung. Interpretation and classification of side scan sonar acoustic data conducted qualitatively by using software SonarPro to know the dimensions or size of the target. Quantitatively, the processing data was using software SonarWiz.MAP, SonarWeb, xtfToSegy, SeisSee and Matlab with the wavelet method.

Side scan sonar memberikan informasi mengenai topografi dasar laut yang sangat diperlukan dalam berbagai aplikasi kelautan seperti jalur aman bagi pelayaran, industri kelautan, survei rute pipa dan kabel bawah laut, deteksi bahan tambang, pencarian daerah tangkapan khususnya ikan demersal, pencarian kapal karam, dan sebagainya. Penelitian ini dapat memberikan informasi kuantitatif berupa nilai backscatter dalam desibel dari objek atau target yang terdeteksi. Tujuan dari penelitian ini adalah menganalisis data side scan sonar secara kuantitatif dan kualitatif serta memperjelas hasil image processing dari side scan sonar menggunakan transformasi wavelet kontinu. Lokasi survei berada di Perairan Selat Sunda pada koordinat 5° 40' 00" LS - 6° 00' 00" LS dan 105° 40' 00" BT - 106° 10' 00" BT. Pengolahan data dilakukan di Laboratorium Akustik Kelautan, Departemen Ilmu dan Teknologi Kelautan, Institut Pertanian Bogor dan di Pusat Penelitian dan Pengembangan Geologi Laut (PPPGL) di Bandung. Interpretasi dan klasifikasi data akustik side scan sonar dilakukan secara kualitatif dengan menggunakan software SonarPro untuk mengetahui dimensi atau ukuran dari target. Pemrosesan data secara kuantitatif menggunakan software sonarWiz.MAP, SonarWeb, xtfToSegy, seisSee dan Matlab dengan metode wavelet.