Hydroacoustic Position Reference is a system to measure the relative position between a
transmitter and a
receiver under water. It is sometimes used for vessels with
dynamic positioning to either measure the relative position between a fixed underwater transmitter or to a mobile under water vehicle (for example
ROV
ROV may refer to:
*Real options valuation
*Recreational Off highway Vehicle, also known as ''Side by side'' or UTV (''Utility Task Vehicle'')
*''Realm of Valor'', Thai-marketed version of multiplayer online video game ''Arena of Valor''
*Remotely ...
).
References
Navigational equipment
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