Implementation of a synthetic aperture processing scheme in a towed array sonar system

S. Stergiopoulos; R. C. Trider

doi:10.1121/1.409086

Implementation of a synthetic aperture processing scheme in a towed array sonar system

The Journal of the Acoustical Society of America ◽

10.1121/1.409086 ◽

1994 ◽

Vol 95 (5) ◽

pp. 2953-2954 ◽

Cited By ~ 3

Author(s):

S. Stergiopoulos ◽

R. C. Trider

Keyword(s):

Synthetic Aperture ◽

Processing Scheme ◽

Sonar System ◽

Towed Array

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Development of an in-air circular synthetic aperture sonar system as an educational tool

10.1121/2.0001025 ◽

2019 ◽

Author(s):

Thomas E. Blanford ◽

John D. McKay ◽

Daniel C. Brown ◽

Joonho D. Park ◽

Shawn F. Johnson

Keyword(s):

Synthetic Aperture ◽

Educational Tool ◽

Synthetic Aperture Sonar ◽

Sonar System

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A Novel Sub-Bottom Profiler and Signal Processor

Sensors ◽

10.3390/s19225052 ◽

2019 ◽

Vol 19 (22) ◽

pp. 5052

Author(s):

Tan ◽

Zhang ◽

Yang ◽

Sun

Keyword(s):

Real Data ◽

Synthetic Aperture ◽

Motion Error ◽

Buried Objects ◽

Synthetic Aperture Sonar ◽

Receiver Array ◽

Sonar System ◽

Data Processing Method ◽

Imaging Performance ◽

Along Track

In this paper, we introduce a novel sub-bottom profiler, making good use of the Mills cross configuration of multibeam sonar and synthetic aperture techniques of the synthetic aperture sonar system. The receiver array is mounted along the ship keel, while the transmitter array is mounted perpendicular to the receiver array. With the synthetic aperture technique, the along-track resolution can be greatly improved. The system often suffers from motion error, which severely degrades the imaging performance. To solve this problem, the imaging algorithm with motion compensation (MC) is proposed. With the presented method, the motion error is first estimated based on overlapped elements between successive pulses. Then, the echo data is processed by using the range migration algorithm based on the phase center approximation (PCA) method, which simultaneously performs the MC with the estimated motion error. In order to validate the proposed sub-bottom profiler and data processing method, some simulations and lake trial results are discussed. The processing results of the real data further indicate that the presented configuration has great potential to find buried objects in seabed sediments.

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