Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Acoustic localization"”.
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Autonomous cricket biosensors for acoustic localization
… to localize low frequency (5 Hz - 600 Hz) acoustic sources using hair-covered appendages called cerci. Whereas previous investigations explored crickets' neurological response to near field flows generated by single frequency steady-state sounds, we investigated the effects of transient …
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Multiarray Passive Acoustic Localization and Tracking
… sensor modalities. Notably, the application of acoustic sensors and arrays of sensors has expanded to encompass surveillance, teleconferencing, and sound source localization in adverse environments. The ability to passively locate and track acoustic sources, be they gunfire, animals, or …
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Application of Neural Networks to Acoustic Localization
… to build a neural network for the purposes of acoustic localization. The target of this localization is a sound source underwater. For our purposes, it is an acoustic pinger, as it produces consistent sound at a fixed rate making it ideal for testing. The network was intended to ingest raw data …
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Passive Acoustic Localization and Tracking with Mobile Robots
<p>Acoustic sensing has received a lot of attention in the underwater domain as this is usually the only form of sensing available. As robotic platforms have been ever increasing in terms of computational capabilities, there now exists the ability to autonomously make decisions and navigate without …
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Field instrumentation for vocalizing avian survey
… disruption. These devices offer recording and acoustic localization of bird calls and relay data via the GSM cellular network to remote servers. Further, the system may be augmented with amplifiers and speakers in order to interact dynamically with the environment as to elicit vocalized …
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Relating behavioral context to acoustic parameters of bottlenose dolphin (Tursiops truncatus) vocalizations
… was developed. This method combined passive acoustic localization with video sampling to determine which animal vocalized. It fills an urgent need for unbiased identification of vocalizations of undisturbed dolphins where details of social interactions can be followed without affecting the …
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Language design for distributed stream processing
… applications, including a sensor-network for the acoustic localization of wild animals such as the Yellow-Bellied marmot. We evaluate WaveScript's performance on this application, showing that it yields good performance on both embedded and desktop-class machines. Our language allowed us to …
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Human-autonomy teaming for improved diver navigation
… limitations. Until recently, fixed-beacon acoustic localization techniques have served as the primary means of improving diver navigation. However, modern artificial intelligence and acoustic modem technologies have enabled accurate relative navigation methods between a diver and an …
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Human-Autonomy Teaming for Improved Diver Navigation
… limitations. Until recently, fixed-beacon acoustic localization techniques have served as the primary means of improving diver navigation. However, modern artificial intelligence and acoustic modem technologies have enabled accurate relative navigation methods between a diver and an …
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Relating behavioral context to acoustic parameters of bottlenose dolphin (Tursiops truncatus) vocalizations
… was developed. This method combined passive acoustic localization with video sampling to determine which animal vocalized. It fills an urgent need for unbiased identification of vocalizations of undisturbed dolphins where details of social interactions can be followed without affecting the …
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Investigating blue and fin whale populations through passive acoustic monitoring using ocean bottom seismometers
… limited to small numbers due to cost. Passive acoustic monitoring (PAM), which detects whale presence through recording calls, is a complementary method that is not sight-limited and can provide long-term continuous data on a large spatial scale. Ocean bottom seismometers (OBSs), geophysical …
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System Level Approach towards Intelligent Healthcare Environment
… ex-vivo imaging, energy for sensors, and acoustic communication. These technologies are: locomotion mechanism for wireless capsule endoscope (WCE), multifunctional image guided surgical (MIGS) platform, shape memory alloy (SMA) thermal energy harvester and thermo-acoustic sonar using …
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Head Mounted Microphone Arrays
… noise cancellation to focused listening, from localization to classification of sound sources, any and all attributes of human hearing may be augmented through the use of microphone arrays and signal processing algorithms. Placing a set of headphones on a human provides several desirable …
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Development of an ATV-Based Remote-Operated Sensor Platform
… target. The test also demonstrated how a mobile acoustic node can relocate to triangulate the location of an acoustic source and thereby replicate a larger stationary network. Overall, these tests demonstrated that such a system is a feasible platform for urban combat use. Full implementation …
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Long Basline Ranging Acoustic Positioning System
A long-baseline (LBL) underwater acoustic communication and localization system was developed for the Virginia Tech Underwater Glider (VTUG). Autonomous underwater vehicles, much like terrestrial and aerial robots require an effective positioning system, like GPS to perform a wide variety of …
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Environmental adaptation in data-driven underwater acoustic signal processing
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Acoustic source localization in 3D complex urban environments
The detection and localization of important acoustic events in a complex urban environment, such as gunfire and explosions, is critical to providing effective surveillance of military and civilian areas and installations. In a complex environment, obstacles such as terrain or buildings introduce …
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Node localization in underwater sensor networks (UWSN)
<p>"This dissertation focuses on node localization in underwater wireless sensor networks (UWSNs) where anchor nodes have knowledge of their own locations and communicate with sensor nodes in acoustic or magnetic induction (MI) means. The sensor nodes utilize the communication signals and the …