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Experimental demonstration of the angular resolution enhancement of a monostatic MIMO sonar

Schröder, Sven and Reermann, Jens and Stephan, Maurice and Kraus, Dieter and Kummert, Anton (2021) Experimental demonstration of the angular resolution enhancement of a monostatic MIMO sonar. Acoustical Society of America. 6th Underwater Acoustics Conference & Exhibition, 20-25 June 2021, Griechenland. doi: 10.1121/2.0001468. ISSN 1939-800X.

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Official URL: https://asa.scitation.org/doi/pdf/10.1121/2.0001468


In this contribution we show by experimental tests the improvement of the angular resolution of an active monostatic Sonar system when using the Multiple-Input-Multiple-Output (MIMO) principle. This principle allows the design of a high-resolution sonar with a lower number of transducers required compared to a conventional Sonar, thus allowing the costs of the Sonar to be significantly reduced. For this purpose, a MIMO Sonar demonstrator was built and experiments were performed in a harbor basin. It is shown that the travel time information can be extended in a manner that allows a factoring of the angular resolution of the system by the number of transmitters. The key to this principle is that the respective transmission pulses of the transmitter modules can be separated from each other during signal processing on the receiver side. This can be achieved through different techniques. In this paper novel transmitter signals are presented, which are coded in a way that they can be transmitted in the same frequency and time window and afterwards be sufficiently separated by correlation filters. To evaluate and model the experiment, also a simulation was developed, which uses a simplified model of the acoustic channel to generate the received signals for a specified setup.

Item URL in elib:https://elib.dlr.de/147131/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental demonstration of the angular resolution enhancement of a monostatic MIMO sonar
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schröder, SvenSven.Schroeder (at) dlr.deUNSPECIFIED
Reermann, Jensjens.reermann (at) atlas-elektronik.comUNSPECIFIED
Stephan, MauriceMaurice.Stephan (at) dlr.deUNSPECIFIED
Kraus, DieterCity Univertity of Applied Sciences BremenUNSPECIFIED
Kummert, Antonkummert (at) uni-wuppertal.deUNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1121/2.0001468
Publisher:Acoustical Society of America
Series Name:Proceedings of Meetings on Acoustics
Keywords:MIMO, Sonar, Virtual aperture, CDMA
Event Title:6th Underwater Acoustics Conference & Exhibition
Event Location:Griechenland
Event Type:international Conference
Event Dates:20-25 June 2021
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Bremerhaven
Institutes and Institutions:Institute for the Protection of Maritime Infrastructures > Maritime Security Technologies
Deposited By: Schröder, Sven
Deposited On:13 Dec 2021 08:10
Last Modified:13 Dec 2021 08:10

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