Survei Batimetri di Perairan Dangkal dengan Menggunakan Wahana USV (Unmanned Surface Vehicle), HIMAGE USV I

USV (Unmanned Surface Vehicle) adalah suatu wahana tanpa awak di permukaan air yang dapat digunakan untuk keperluan survey batimetri. Hal ini dikarenakan, wahana USV memiliki kelebihan dalam hal fleksibilitas, efisiensi, dan efektifitas. Pada penelitian ini, penulis melakukan perancangan, pembuatan dan penggunaan wahana USV (HIMAGE USV I) yang dilengkapi sensor akustik (down imaging) untuk survei batimetri di Danau Ranu Grati, Kabupaten Pasuruan, Jawa Timur.Survei batimetri di Danau Ranu Grati, Kabupaten Pasuruan, Jawa Timur dengan menggunakan wahana USV menghasilkan Peta Batimetri Danau Ranu Grati, Kabupaten Pasuruan, Jawa Timur dan Visualisasi 3D Batimetri Danau Ranu Grati Kabupaten Pasuruan, Jawa Timur. Selain 2 luaran peta yang dihasilkan, dilakukan juga analisa penggunaan wahana USV untuk keperluan survei batimetri di perairan dangkal dan analisa kedalaman data down imaging yang bersilangan antara lajur utama dengan lajur silang berdasarkan Standards for Hydrographics Surveys (IHO) 3th Edition, Special Publication No.44, 1989. Hasil dari analisa penggunaan wahana USV, HIMAGE USV I untuk pengukuran batimetri, wahana yang digunakan memiliki kelebihan terkait tipe / model wahana yang dibuat dan kelebihan terkait sensor akustik yang digunakan, namun wahana USV yang digunakan juga memiki kekurangan terkait sistem pendingin mesin, alarm pada baterai dan keteraturan jalur pemeruman. Olehkarena itu, perlu dilakukannya beberapa perbaikan agar pengukuran batimetri menggunakan wahana USV dapat lebih baik. Analisa kedua mengenai verifikasi kedalaman data down imaging dengan diambilnya 6 sampel data kedalaman yang bersilangan antara lajur utama dan lajur silang didapatkan bahwa, dari 6 sampel semua data dapat dikategorikan masuk kedalam orde 1 pada akurasi kedalaman menurut Standards for Hydrographics Surveys (IHO) 3th Edition, Special Publication No.44, 1989. ================================================================= USV (Unmanned Surface Vehicle) is an unmanned vehicle on surface water that can be used for bathymetry survey. This is because the USV has advantages in terms of flexibility, efficiency, and effectiveness. In this final assignment, the author start to design, manufacture and using the USV (Unmanned Surface Vehicle) vehicle equipped with acoustic sensors (down imaging and side imaging) for bathymetry survey at Ranu Grati Lake, Pasuruan District, East Java. The bathymetry survey at Ranu Grati Lake, Pasuruan District, East Java was held on March 25, 2017. The results of this bathymetry survey are Bathymetry Map of Ranu Grati Lake, Pasuruan District, East Java; 3D Visualization of Ranu Grati Lake, Pasuruan District, East Java, And Side Scan Sonar Mosaic Map of Ranu Grati Lake, Pasuruan District, East Java. Beside the 3 maps resulted , this study also evaluating the bathymetry surveys using USV, depth analysis of down imaging data between the main and cross paths based on Standards for Hydrographic Surveys (IHO) 3rd Edition, Special Publication No.44,1989, And also identify the object located on bed surface of Ranu Grati lake, Pasuruan District, East Java. The analysis of bathymetry surveys using USV at Ranu Grati Lake, Pasuruan District, East Java, the USV has an advantage over the acoustic sensors used and the type of vehicle that are made, but still has constraints on the engine cooling system, battery alarm, and vehicle controls for better survey tracks. The result of verification of depth down imaging data with 6 samples of cross - linked depth data between main line and cross line, found that from 6 sample data, all data can be categorized into order 1 on depth accuracy according to Standards for Hydrographics Surveys (IHO) 3th Edition , Special Publication No.44, 1989. And for the results of side scan analysis sonar mosaic map, it can be said that on the surface of Lake Ranu Grati, Pasuruan, East Java, covered by sand, mud and clay, and there is no shipwrecks, iron or other larger hard objects