acoustic position reference system
acoustic position reference system
[ə′küs·tik pə′zish·ən ¦ref·rəns ‚sis·təm] (engineering)
An acoustic system used in offshore oil drilling to provide continuous information on ship position with respect to an ocean-floor acoustic beacon transmitting an ultrasonic signal to three hydrophones on the bottom of the drilling ship.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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