An acoustic positioning system relies on the transmission and reception of acoustic signals to determine position.

• A. True
• B. False
• C. Not sure
• D. Partially

Answer: (A)

An acoustic positioning system determines location by sending out an acoustic signal and listening for its return or arrival at known reference points. By measuring how long the signal takes to travel (time of flight) and sometimes comparing phases or arrivals across multiple receivers, the system computes distances to anchors. With these known distances and the known positions of the anchors, the position of the target is solved through trilateration/multilateration. This reliance on transmitting and receiving acoustic signals is the fundamental method to determine position, so the statement is true. In underwater settings, sound propagates well whereas radio waves do not, which is why acoustics are used. Some systems may add refinements like Doppler or other data, but the core concept remains based on transmission and reception of acoustic signals.