A Novel Sub-Bottom Profiler and Signal Processor

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 perpendicul...

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Main Authors: Cheng Tan, Xuebo Zhang, Peixuan Yang, Miao Sun
Format: Article
Language:English
Published: MDPI AG 2019-11-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/19/22/5052
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author Cheng Tan
Xuebo Zhang
Peixuan Yang
Miao Sun
author_facet Cheng Tan
Xuebo Zhang
Peixuan Yang
Miao Sun
author_sort Cheng Tan
collection DOAJ
description 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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spelling doaj.art-b68db23d0d5245f4a39520462b053d932022-12-22T04:08:52ZengMDPI AGSensors1424-82202019-11-011922505210.3390/s19225052s19225052A Novel Sub-Bottom Profiler and Signal ProcessorCheng Tan0Xuebo Zhang1Peixuan Yang2Miao Sun3Aerospace Technology Institute of CARDC, Aerodynamics Research and Development Center, Mianyang 621000, ChinaLaboratory of Underwater Acoustics, Zhanjiang 524000, ChinaPan-wisdom Education, Lanzhou 730050, ChinaChina Railway Twenty-one Bureau Group Corporation, Lanzhou 730000, ChinaIn 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.https://www.mdpi.com/1424-8220/19/22/5052mills cross configurationsynthetic aperture techniquemotion compensationimaging algorithm
spellingShingle Cheng Tan
Xuebo Zhang
Peixuan Yang
Miao Sun
A Novel Sub-Bottom Profiler and Signal Processor
Sensors
mills cross configuration
synthetic aperture technique
motion compensation
imaging algorithm
title A Novel Sub-Bottom Profiler and Signal Processor
title_full A Novel Sub-Bottom Profiler and Signal Processor
title_fullStr A Novel Sub-Bottom Profiler and Signal Processor
title_full_unstemmed A Novel Sub-Bottom Profiler and Signal Processor
title_short A Novel Sub-Bottom Profiler and Signal Processor
title_sort novel sub bottom profiler and signal processor
topic mills cross configuration
synthetic aperture technique
motion compensation
imaging algorithm
url https://www.mdpi.com/1424-8220/19/22/5052
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