Design criteria and performance assessment of a towed twin line array. | [Proceedings 5th International Bhurban Conference on Applied Sciences and Technology • 2007]

Author(s):

1. A. Rademacher: ATLAS ELEKTRONIK GmbH Sebaldsbrucker Heerstr, Bremen, Germany

2. J. Licht: ATLAS ELEKTRONIK GmbH Sebaldsbrucker Heerstr, Bremen, Germany

3. U. Barg: ATLAS ELEKTRONIK GmbH Sebaldsbrucker Heerstr, Bremen, Germany

4. D. Maiwald: ATLAS ELEKTRONIK GmbH Sebaldsbrucker Heerstr, Bremen, Germany

Abstract:

Main advantages of low frequency active towed array sonar systems are large detection range and the capability to adapt the towing depth to the stratification of the ocean. In this paper, the low frequency Active Towed Array Sonar System (ACTAS) of ATLAS ELEKTRONIK is addressed. The receiving unit of the system is a towed twin line array which is designed for optimum left/right (L/R) discrimination. By combined processing of data from the two line arrays, noise and reverberation interferences from ambiguous directions are suppressed and the target SNR is improved considerably. A prerequisite for optimum L/R discrimination is a horizontal operation of the two parallel line arrays. ACTAS ensures this by stabilizers which are mounted on the junction points (fork) of the two streamers. This contribution presents a system summary, it demonstrates the robustness of signal processing regarding a deviation of the array shape from an ideal straight line. Furthermore, the stabilizer design as a central component for the twin line array dynamics is outlined.

Page(s): 37-40

DOI: DOI not available

Published: Journal: Proceedings 5th International Bhurban Conference on Applied Sciences and Technology , Volume: 0, Issue: 0, Year: 2007

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