John L. Spiesberger
James B. Bowlin
Woods Hole Oceanographic Inst., Woods Hole, MA 02543
A new telemetry scheme is described that will make it possible to monitor ocean temperatures in real time using acoustic tomography. The system incorporates autonomous sources mounted on subsurface moorings and receivers that are either cabled to shore or suspended from surface units that drift. The telemetry scheme predicts that the corruption of acoustic travel times, due to wander of the source's mooring, can be largely eliminated in real time by shifting the start times of the tomographic transmissions in special ways. Corrections to source wander can be obtained without expending battery energy over and above that used in conventional tomography experiments. Standard techniques can be used to correct clock errors at the source in real time.