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英國Applied Acoustic Engineering (AAE)
英國AAE公司EasyTrak型水下定位系統應用了當前最為先進的水下聲定位技術，系統穩定可靠，定位精度高，結構輕巧，操作方便，廣泛應用于各類海洋水下定位項目：潛水員跟蹤定位、海上搜救任務、水下考古、海洋水文儀器回收、拖魚跟蹤定位、定點布放、聲學釋放器布放和回收、AUV/ROV 跟蹤定位和大壩監測等。
英國AAE公司可研制生產覆蓋各個應用領域的全系列聲學釋放系統。

Applied Acoustic Engineering is a leading company in the design and manufacture of a wide range of subsea navigation and positioning products, and marine seismic survey equipment.

The extensive product range includes the innovative USBL tracking system, Easytrak, a variety of positioning and release beacons and seismic devices for offshore geotechnical and seabed analysis known as sub-bottom profiling.

All products use acoustics, underwater sound waves, in location, positioning, navigation and data acquisition applications.