Triplet Sensors in Towed Array Sonar Systems

International Journal of Electronics and Communication Engineering

© 2022 by SSRG - IJECE Journal

Volume 9 Issue 7

Year of Publication : 2022

Authors : Sasmita Mohapatra, Krithika T, Sukrutha K, Aditya Raj

10.14445/23488549/IJECE-V9I7P102

How to Cite?

Sasmita Mohapatra, Krithika T, Sukrutha K, Aditya Raj, "Triplet Sensors in Towed Array Sonar Systems," SSRG International Journal of Electronics and Communication Engineering, vol. 9,  no. 7, pp. 7-12, 2022. Crossref, https://doi.org/10.14445/23488549/IJECE-V9I7P102

Abstract:

Cardioid or triplet towed arrays are used in sonar applications to resolve left/right ambiguity by placing a null in the ambiguous direction. It leaves an uncalibrated residual signal in the opposite direction from which the desired signal arrives. In the sonar signal processing, the weighted delayed sum beam forming is used to discriminate between signal arrival from different bearings; however, in the towed linear array, there will be a symmetry in signal arrival delays produced from acoustic signal arriving from two distinct directions one being on the left side and other beings on right side of the array resulting in left /right ambiguity. Here Cardioid or triplet arrays consisting of a line of triplets instead of a line of single hydrophones are used. Each triplet consists of three closely-spaced omnidirectional hydrophones evenly mounted on a circle perpendicular to the array axis.

Keywords:

Cardioid, Hydrophones, Omnidirectional, Sensor, Triplet array.

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