Experimental Detection and Reception Performance for Uplink Underwater Acoustic Communication Using a Remote, In-Air, Acousto-Optic Sensor

Blackmon, F.; Antonelli, Lynn T.

doi:10.1109/joe.2005.861248

Cited by 27 publications

(19 citation statements)

References 8 publications

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“…The laser-induced breakdown is in the non-linear regime of opto-acoustic conversion which is more energy efficient than in the linear regime [5]. The non-linear mechanism can be employed to produce higher sound pressure level acoustic signals.…”

Section: Resultsmentioning

confidence: 99%

“…High power acoustic sources generated by LIB in liquids (in particular in water) is of considerable interest due to its potential applications in laser medicine [3,4] and ocean exploration [5][6][7], etc. Traditional sonar is limited to detecting the little targets because of its relatively lower resolution compared with laser acoustic sources generated by LIB.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical and experimental studies of directivity of sound field generated by pulsed laser induced breakdown in liquid water

Shen

Zhu

2013

SPIE Proceedings

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High power acoustic sources, generated by laser-induced breakdown when high power laser is focused into water, have extensive application prospects in laser medicine and ocean exploration. Combining the models of sound column and plasma disc in laser-induced breakdown generated sound field, a plasma cylinder model is established. The directivity of the sound field, and it's characteristics are mapped and analyzed through numerical simulation, as well as theoretical analysis. An experiment is designed and performed to verify the plasma cylinder model. The experimental results, which are in a good agreement with the simulation, reveal the maximum pressure amplitude of the acoustic signals is at the direction vertical to the light propagation, and present a distinct major-lobe and minor-lobes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental studies of directivity of sound field generated by pulsed laser induced breakdown in liquid water

Shen

Zhu

2013

SPIE Proceedings

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“…First, we adjust the PTZ camera so that the matrix can be initialized as an identity matrix, and both and are zeroes. By doing that we only need to solve (8) to find the values of , and . Second, with the initial values of these three parameters, and till assuming the matrix is an identity matrix, we solve and .…”

Section: B Calibrationmentioning

confidence: 99%

“…The audio signals of a target (human or other subject) could be acquired by capturing the vibration of a surface caused by the sound of the target next to the surface. Blackmon and Antonelli [8] have tested and shown a sensing system to detect and receive underwater communication signals by probing the water surface from the air using an LDV and a surface normal tracking device. In the past few years, our lab [9], [10] has studied the detection and processing of voice signals of people from large distances using an LDV.…”

Section: Introductionmentioning

confidence: 99%

An active multimodal sensing platform for remote voice detection

Wang

Zhu

2010

2010 IEEE/ASME International Conference on Advanced Intelligent Mechatronics

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Abstract-To improve the performance and the efficiency of Laser Doppler Vibrometers (LDVs) for long-range hearing, we design an active multimodal sensing platform that integrates a Pan-Tilt-Zoom (PTZ) camera, a mirror and a Pan-Tilt-Unit (PTU) to the LDV. With the assistance of the vision and active control components, the LDV can automatically select the best reflective surfaces, point the laser beam to the selected surfaces, and quickly focus the laser beam. For accomplishing these functions, distance measurement and sensor calibration methods are proposed using the triangulation between the PTZ camera and the mirrored LDV laser beam. Based on both the measured distances and the return signal levels of the LDV, a fast and automatic LDV focusing algorithm is designed. Furthermore, strategies of surface selection and laser pointing are designed for the platform to automatically point the laser beam to the designated surfaces. Experimental results are shown to validate the performance improvement of the LDV in remote automatic voice detection by using the active multimodal sensing platform.

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“…The capability of measuring the velocity and displacement in a high-precision and non-intrusive remote scheme provides the Laser Doppler Vibrometry (LDV) a well-known application in Non-destructive testing (NDT) [1,2] , speech-signal acquirement [3] , and acousto-optic communication [4,5] . Depending on the monitoring of the Doppler shift of coherent light scatter generated by the glass or water vibration surface, LDV can reconstruct the sound information which frequency deviation is within ±0.5Hz.…”

Section: Introductionmentioning

confidence: 99%

All-fiber heterodyne Laser Doppler Vibrometry for acousto-optic communication

Shang

Zhao

et al. 2011

2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim Incorpo

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A novel all-fiber heterodyne Laser Doppler Vibrometry (LDV) for acousto-optic communication has been developed in this paper. A line width of 1 kHz single mode continuous fiber laser, two acousto-optic frequency shifters (AOFS), two balanced photodetectors and one telescope with 30 mm aperture were used in this LDV. Using the above system setup, the 6 kHz signal can be reconstructed by detecting the vibration of a glass sticking on the piezoceramic transducer (PZT). The proposed vibration measurement technique proved to be very accurate and potential to acquire the acoustic signal by experimental results.

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Experimental Detection and Reception Performance for Uplink Underwater Acoustic Communication Using a Remote, In-Air, Acousto-Optic Sensor

Cited by 27 publications

References 8 publications

Theoretical and experimental studies of directivity of sound field generated by pulsed laser induced breakdown in liquid water

Theoretical and experimental studies of directivity of sound field generated by pulsed laser induced breakdown in liquid water

An active multimodal sensing platform for remote voice detection

All-fiber heterodyne Laser Doppler Vibrometry for acousto-optic communication

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