An acoustic positioning system measures position relative to a framework of baseline stations using transmitted and received acoustic signals.

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

Answer: (A)

Acoustic positioning relies on fixed reference points to determine where a tag is. A network of baseline stations has known positions and serves as that reference framework. The tag communicates with multiple anchors by transmitting and receiving acoustic signals. By measuring how long signals take to travel (or the differences in arrival times) and knowing the speed of sound in the environment, the system estimates ranges to those anchors. With several range measurements, the position of the tag can be computed relative to the known locations of the baseline stations, effectively locating it within the anchored framework. This approach is exactly what the statement describes, so the answer is true.