Acoustic ship signature measurements by cross-correlation method

Fillinger, Laurent; Sutin, Alexander; Sedunov, Alexander

doi:10.1121/1.3365315

Cited by 33 publications

(20 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have addressed this shortcoming by developing a technique to separate the DEMON signatures using the cross-correlation of signals arriving at various hydrophones. The presented results are based on application of cross-correlation method for DEMON ship signature extraction [18,19]. These papers showed the applicability of the cross-correlation method for the separation of the ship acoustic signature in one simple example.…”

Section: Introductionmentioning

confidence: 89%

DEMON Acoustic Ship Signature Measurements in an Urban Harbor

Chung

Sutin

Sedunov

et al. 2011

Advances in Acoustics and Vibration

Self Cite

View full text Add to dashboard Cite

Detection, classification, and tracking of small vessels are important tasks for improving port security and the security of coastal and offshore operations. Hydroacoustic sensors can be applied for the detection of noise generated by vessels, and this noise can be used for vessel detection, classification, and tracking. This paper presents recent improvements aimed at the measurement and separation of ship DEMON (Detection of Envelope Modulation on Noise) DEMON acoustic signatures in busy harbor conditions. Ship signature measurements were conducted in the Hudson River and NY Harbor. The DEMON spectra demonstrated much better temporal stability compared with the full ship spectra and were measured at distances up to 7 km. The combination of cross-correlation and methods allowed separation of the acoustic signatures of ships in busy urban environments.

show abstract

Section: Introductionmentioning

confidence: 89%

DEMON Acoustic Ship Signature Measurements in an Urban Harbor

Chung

Sutin

Sedunov

et al. 2011

Advances in Acoustics and Vibration

Self Cite

View full text Add to dashboard Cite

show abstract

“…Within the project framework, two autonomous acoustic detection units were deployed next to the promontory of Portofino, each one equipped with a hydrophone array which can record both the typical acoustic signal emitted by the dolphin (social communication whistle) (Zimmer, 2011) and the sound produced by boat engines (Fillinger et al, 2011). The detection units communicate via radio link with the ground station, located inside the Portofino lighthouse.…”

Section: Arion Projectmentioning

confidence: 99%

“…The boat tracking algorithm is based on the cross-correlation method (Fillinger et al, 2011) and on custom-made improvements made to it (Brunoldi et al, 2016). It obtains the direction of the acoustic source, through the cross-correlation signals of two different hydrophone pairs.…”

Section: Motor Boat Detection and Trackingmentioning

confidence: 99%

ARION System for coastal dolphin conservation: A tool for real-time dolphin passive acoustic monitoring in the Portofino Marine Protected Area

Casale¹,

Brunoldi²,

Grosso³

et al. 2016

Proceedings of Meetings on Acoustics

View full text Add to dashboard Cite

Bottlenose dolphins change their whistling characteristics in relation to vessel presence, surface behavior and group composition Proceedings of Meetings on Acoustics 27, 010030 (2016) Mauro TaiutiDepartment of Physics, University of Genova, Genova, IT; taiuti@ge.infn.it Within the framework of the EU Life+ project named LIFE09 NAT/IT/000190 ARION, a permanent autonomous real-time passive acoustic monitoring system has been implemented in the Portofino Marine Protected Area (IT) for the improvement of the conservation status of bottlenose dolphin (Tursiops truncatus). The system is able to detect and track in real time the simultaneous presence of dolphins and motor boats in the study area. This information is used to prevent collisions and noise pollution by diffusing warning presence messages to the end users involved, as sailors and tourists. In three years of data collecting the proper functioning of the system has been validated. A large number of dolphin pods has been detected and localized. Furthermore different types of motor boats have been tracked in the study area. The system is also able to measure different marine parameters and to obtain the ambient background noise in order to understand the influence of human activities on the dolphin behavior. This type of research is in progress and the first results are shown.

show abstract

“…Those few studies carried out in confined coastal and inland waterways that are found in the literature have focused on a variety of issues, including acoustic scintillation to estimate current flow (Di Iorio and Farmer, 1994), active sonar systems for biological stock assessment and fisheries management (Xie, 2000), homeland security applications (Stolkin et al, 2006), acoustical communication (van Walree et al, 2007, acoustical monitoring of tidal bores (Zhu et al, 2010), marine mammal surveys (Dong et al, 2011), seasonal trends in a large remote fjord (McConnell et al, 1992), recreational boat noise in waterways (Haviland-Howell et al, 2007), ambient noise in freshwater habitats (Wysocki et al, 2007), high-frequency noise spectra in shallow brackish water (Poikonen, 2010), long-term noise trends in large, industrialized rivers (Vracar and Mijic, 2011), acoustical monitoring of ship traffic (Fillinger et al, 2011), acoustic attenuation properties in a river (Roh et al, 2008), sitespecific acoustic propagation models for the lower Hudson River Estuary (Radhakrishnan, 2009), and acoustic quantification of stratified turbulence in the Connecticut River (Lavery et al, 2013).…”

mentioning

confidence: 99%

Field observation of low-to-mid-frequency acoustic propagation characteristics of an estuarine salt wedge

Reeder

2016

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

The estuarine environment often hosts a salt wedge, the stratification of which is a function of the tide's range and speed of advance, river discharge volumetric flow rate, and river mouth morphology. Competing effects of temperature and salinity on sound speed in this stratified environment control the degree of acoustic refraction occurring along an acoustic path. A field experiment was carried out in the Columbia River Estuary to test the hypothesis: the estuarine salt wedge is acoustically observable in terms of low-to-mid-frequency acoustic propagation. Linear frequencymodulated acoustic signals in the 500-2000 Hz band were transmitted during the advance and retreat of the salt wedge during May 27-29, 2013. Results demonstrate that the salt wedge front is the dominant physical mechanism controlling acoustic propagation in this environment: received signal energy is relatively stable before and after the passage of the salt wedge front when the acoustic path consists of a single medium (either entirely fresh water or entirely salt water), and suffers a 10-15 dB loss and increased variability during salt wedge front passage. Physical parameters and acoustic propagation modeling corroborate and inform the acoustic observations.

show abstract

Acoustic ship signature measurements by cross-correlation method

Cited by 33 publications

References 7 publications

DEMON Acoustic Ship Signature Measurements in an Urban Harbor

DEMON Acoustic Ship Signature Measurements in an Urban Harbor

ARION System for coastal dolphin conservation: A tool for real-time dolphin passive acoustic monitoring in the Portofino Marine Protected Area

Field observation of low-to-mid-frequency acoustic propagation characteristics of an estuarine salt wedge

Contact Info

Product

Resources

About