SONAR (Sound Navigation And Ranging) adalah suatu metode yang memanfaatkan perambatan suara didalam air untuk mengetahui keberadaan objek yang berada dibawah permukaan. SONAR (Sound Navigation And Ranging) sering digunakan di dunia kelautan sebagai alat navigasi kapal militer. Pada umumnya transduser yang digunakan untuk SONAR menggunakan sinyal pulsa untuk melakukan transmisi. Pendeteksian objek bawah air memanfaatkan perbedaan nilai amplitudo tegangan untuk suatu target objek yang memiliki perbedaan densitas.
SONAR akan digunakan untuk mendeteksi multiple objek yang ada di bawah air. Pada tugas akhir ini akan dilakukan simulasi deteksi objek objek di bawah air dengan memanfaatkan pantulan sonar, dengan cara menembakan gelombang yang telah ditembakan oleh satu transmitter dan akan diterima oleh reciver. Data yang diterima oleh reciver akan dianalisis sesuai dengan kebutuhan penelitian ini.
Hasil yang didapatkan dalam penelitian ini antara lain perekaman sonar Underwater Path didapatkan hasil dua (2) target, target pertama dengan hasil posisi source awal di -60m dan di -70m posisi akhir di km 1100 terjadi dua (2) pantulan gelombang, target kedua dilakukan posisi akhir di km 1300 dan ketinggian diposisi -45m dengan rata – rata terjadi dua kali pantulan dua (2) gelombang.
Perekaman puncak tertinggi bellhop path terjadi di km ke 45 dan 90 dan terendah di km 15 dan 75, Selanjutnya perekaman data Integrated received pulse dimana Amplitudo maximal/ tertinggi terjadi di detik ke 66.5.
Kata kunci : SONAR, bawah air, multiple objek
SONAR (Sound Navigation And Ranging) is a method that utilizes sound propagation in the water to determine the presence of objects that are below the surface. SONAR (Sound Navigation And Ranging) is often used in the marine world as a military ship navigation tool. In general, the transducer used for SONAR uses a pulse signal to transmit. Detection of underwater objects takes advantage of the difference in the value of the voltage amplitude for a target object that has a density difference.
SONAR will be used to detect multiple objects underwater. In this final project, a simulation of the detection of objects under water will be carried out by utilizing sonar reflections, by firing a wave that has been fired by a transmitter and will be received by a receiver. The data received by the receiver will be analyzed according to the needs of this study.
The results obtained in this study, among others, the Underwater Path sonar recording resulted in two (2) targets, the first target with the initial source position at -60m and at -70m the final position at km 1100 occurred two (2) wave reflections, the second target was carried out the final position is at 1300 km and the altitude is -45m with an average of two reflections of two (2) waves.
The highest peak recording of the bellhop path occurred at km 45 and 90 and the lowest was at km 15 and 75. Furthermore, the recording of Integrated received pulse data where the maximum/highest amplitude occurred at 66.5 seconds..
Keywords: SONAR, Underwater, Multiple object