Efficient Underwater Acoustical Localization Method Based On Time Difference and Bearing Measurements

Small Boat Bearing Localization using Time-Difference of Arrival

This tutorial involves implementing sonar processing algorithms and applying them to real underwater hydrophone data collected in the ocean. The goal of the tutorial is to learn how to apply the time-difference of arrival (TDOA) method to acoustic data recorded on two hydrophones to obtain a bearing estimate. TDOA processing is a classic passive sonar problem, and is also forms basis for many o...

InPhase: An Indoor Localization System based on Phase Difference Measurements

Localization is an important challenge for all applications with autonomous navigating devices. Systems like GPS solve this challenge for most outdoor applications but such systems are not able to operate indoors. Indoor localization therefore is an active research topic. When it comes to locating nodes that travel from indoors to outdoors most systems are overwhelmed. Thus, we propose a system...

Efficient Sound Source Localization based on Estimation using Time Difference of Arrival (for Blind)

The process or activity of accurately ascertaining blind's position and planning and following a route in an internal system. Source Localization has been one of the frank setbacks in countless spans, encompassing sonar, radar, teleconferencing or videoconferencing mobile phone locale discovering exploration and globe positioning arrangements localization of earthquake epicenters and undergroun...

Three-dimensional underwater acoustical imaging

Energy-Based Acoustical Measurements of Rocket Noise

Energy-based acoustical measurements are investigated in the context of more fully characterizing rocket noise source regions. Near-field measurements made on statically fired GEM-60 motors are described and the performance of two types of four-microphone tetrahedral probes is discussed. Vector intensity plots reveal the magnitude and directionality of the near-field sound radiation as a functi...