= Ultra-short baseline acoustic positioning system
{wiki=Ultra-short_baseline_acoustic_positioning_system}
The Ultra-short Baseline (USBL) acoustic positioning system is a technology used for determining the position of underwater objects, such as submersibles, remotely operated vehicles (ROVs), and other underwater installations. USBL systems rely on the propagation of acoustic signals in water to calculate positions based on the time it takes for sound waves to travel between a surface vessel and underwater targets.
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