Distinguish Sea Turtle and Fish Using Sound Technique in Designing Acoustic Deterrent Device

Mahfurdz, Azrul; Sunardi, Sunardi; Ahmad, Hamzah; Abdullah, Syed; Nazuki, Nazuki

doi:10.12928/telkomnika.v13i4.1827

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…In order to cover maximum length of the pipeline with low energy and more network life time, we have defined the different ranges of acoustic communication for each types of sensor varying from 200 meter to more than 1000 meter. It is found that acoustic communications work best for the short range applications because it support bandwidth of 20-30 KHz [22][23][24] in 1 km distance. Although, in special cases, we can increase this range of sensors [25], but in normal acoustic communication it is suggested to use the discussed ranges of sensors.…”

Section: Related Workmentioning

confidence: 99%

Scalable Nodes Deployment Algorithm for the Monitoring of Underwater Pipeline

et al. 2016

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Underwater Wireless Linear Sensor Networks (UW-LSNs Keywords: scalability, heterogeneity, nodes deployment algorithm, underwater pipeline monitoringCopyright © 2016 Universitas Ahmad Dahlan. All rights reserved. IntroductionUnderwater environments do not remain feasible for human operators due to the harsh underwater activities, high water pressure, hazardous underwater creatures, vast areas for exploration and lack of high frequency signals propagation [1]. Due to the underwater acoustic communication, the signal propagation speed is decreased to the speed of sound. Although in underwater, sound waves travel longer and faster than the air but still they are five times slower than the electromagnetic waves [2]. Most of deployment algorithms and routing protocols do not remain suitable for such environments as they necessitate random nodes deployment, joint topology, 2D area, higher data rate, and outcomes in large end-to-end delays [3]. Although significant areas of improvement are highly required to be there in UW-LSN monitoring techniques like scalable nodes deployment, distribution of large network, minimization of the delay in communication and efficient data deliveries to the sink; but the available data rates for the long range underwater applications is very low and not feasible for the real time communication. In short, it seems to be hard to increase the data rate for the long range underwater communication where scalable and efficient nodes deployments in distributed topology are highly supportive in this regard.In fact, UW-LSNs and terrestrial sensor networks have many common properties including deployment of large number of nodes and energy constraints; but UW-LSN stays unique in many aspects from the terrestrial sensor networks [4]. Firstly, most of the times homogenous types of sensor nodes are deployed randomly that are not scalable for extension of underwater pipelines monitoring coverage. Secondly, UW-LSN requires special deployment algorithms that assign proper nodes positions in 3D dynamic underwater environment. Thirdly, sensors are linearly deployed to maintain the linear topology and distributed topology network [5] that divides the pipeline length into sub-zones and ranges of heterogeneous sensors.

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Section: Related Workmentioning

confidence: 99%

Scalable Nodes Deployment Algorithm for the Monitoring of Underwater Pipeline

et al. 2016

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“…Target strength is the acoustic size of a target in form of decibels (dB). The TS measurement suggested using echo signal observation from the transducer output [13].…”

Section: Echo Voltage and Target Strengthmentioning

confidence: 99%

Echo voltage reflected by turtle on various angles

Sunardi

Yudhana

Mahfurdz

et al. 2015

Int. J. Adv. Intell. Informatics

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This research proposes the acoustic measurement by using echo sounder for green turtle detection of 1 year, 12 and 18 years. Various positions or angles of turtles are head, tail, shell, lung, left and right side. MATLAB software and echo sounder are used to analyse the frequency and the response of the turtle as echo voltage and target strength parameter. Based on the experiment and analysis have been conducted, the bigger size of the turtle, the higher echo voltage and target strength. The target strength of turtle for lung and shell for all ages are -26.52 dB and –26.17 dB respectively. The target strength of turtles in this research is different with target strength of fish in our previous research. Therefore, for future research, the repellant system based on differences of target strength the turtle and fish for avoided the turtle trapping in the net can be implemented to protect the population of turtle from extinction

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Bio- and Fishery Acoustics

Blondel

2017

Applied Underwater Acoustics

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Distinguish Sea Turtle and Fish Using Sound Technique in Designing Acoustic Deterrent Device

Abstract: Acoustic is a common method for underwater object classification and to

Cited by 3 publications

References 13 publications

Scalable Nodes Deployment Algorithm for the Monitoring of Underwater Pipeline

Scalable Nodes Deployment Algorithm for the Monitoring of Underwater Pipeline

Echo voltage reflected by turtle on various angles

Bio- and Fishery Acoustics

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