Analysis of angular resolution and range resolution on multibeam echosounder R2 Sonic 2020 in Port of Tanjung Perak (Surabaya)

Utilizing a multibeam echosounder considers several factors based on its specifications, such as selectable frequency and selectable swath angle. It is done for multibeam efficiency and being usable in any situation. This research will analyze the Angular Resolution and Range Resolution. The purpose is to determine the ability of Multibeam echosounder in detecting small objects. Data is taken on November 15th, 2019. Multibeam echosounder R2 Sonic 2020 has a selectable frequency and selectable swath angle features. The frequency used for data acquisition is 400 kHz, and the swath angle used is 110°. Multibeam echosounder R2 Sonic 2020 has spatial resolution values, which are range resolution and angular resolution. This study's result obtained a value of range resolution of 0.012m and an angular resolution value of 0.033m. The results obtained a value of range resolution 0.012875 m and a value of angular resolution 0.03372 m with a frequency of 400 kHz used. From these results, it can be said that Multibeam Echosounder R2 Sonic 2020 has the ability to distinguish adjacent objects (Angular Resolution) within 33.72 mm and the multibeam echosounder has the ability to distinguish the height of an object within 12.85 mm.