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 6 of 6 for “"Underwater Localization"”.
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Underwater Localization and Tracking of Physical Systems
… we investigate the problem of localizing an underwater sensor node basedon message broadcasting from multiple surface nodes. With the time-of-arrival measurementsfrom a DSP-based multicarrier modem, each sensor node localizes itself based on the traveltime differences among multiple senders …
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Underwater localization using imaging sonars in 3D environments
This work proposes a localization method using a mechanically scanned imaging sonar (MSIS), which stands out by its low cost and weight. The proposed method implements a Particle Filter, a Bayesian Estimator, and introduces a measurement model based on sonar simulation theory. To the best of …
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A Comparative Study of Feature Detection Methods for AUV Localization
<p>Underwater localization is a difficult task when it comes to making the system autonomous due to the unpredictable environment. The fact that radio signals such as GPS cannot be transmitted through water makes autonomous movement and localization underwater even more challenging. One specific …
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THE ACCURACY IN LOCATING AN UNDERWATER ACOUSTIC SOURCE WITH THREE SUBMERGED SENSORS
This thesis addresses the performance of two underwater localization estimator. The localization system under consideration is passive and employs three submerged omnidirectional sensors in a deep multipath ocean environment. The performance measure used is the variance of the localization …
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Wireless Systems for a Sustainable Future: From Battery-Free Subsea IoT to THz-Based Agriculture Monitoring
… ways to unlock new capabilities in underwater climate monitoring, food safety, and disaster response. The thesis introduces two novel technologies. The first technology enables long-term, ultra-low power ocean sensor networks for use in climate modeling, marine monitoring, and …
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Towards Autonomous Localization of an Underwater Drone
… environments. These sensors are ineffective in underwater environments due to signal attenuation. Autonomous underwater vehicles utilize one or more of the following approaches for successful localization and navigation: inertial/dead-reckoning, acoustic signals, and geophysical data. This …