Methodologies for resolving anomalous position information in torpedo range tracking using simulation
Kroshl, William M.
Read, Robert R.
Forrest, R. Neagle
MetadataShow full item record
This thesis investigates the problem of resolving dual path records of torpedoes being tracked on an acoustic range using short baseline arrays. An acoustic signal is sent out by a torpedo at short intervals. This signal is then received by the four hydrophones of a short baseline array. Arrival time differences in the signal are used to determine an estimated position for the torpedo at the time the signal was emitted using spherical equations and acoustic raytracing. In those areas where two arrays can track a target simultaneously, two sets of estimated positions are generated. These estimates usually do not coincide. A simulation of the range is developed using actual range positions and sound velocity data. Deliberate errors are then range introduced into the sound velocity profile data and the timing data. Three methods of resolving the resulting positional ambiguity are presented. Each method is compared to the actual position for idealized (no deliberate error) and the deliberate error models.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Karaman, Sadi (1986-06);A sequential extended Kalman -filter and optimal smoothing algorithm was developed to provide real time estimates o-f torpedo position and depth on the three dimensional underwater tracking range at the Naval Torpedo Station, ...
Observations and transport theory analysis of low frequency, acoustic mode propagation in the Eastern North Pacific Ocean Chandrayadula, Tarun K.; Colosi, John A.; Worcester, Peter F.; Dzieciuch, Matthew A.; Mercer, James A.; Andrew, Rex K.; Howe, Bruce M. (Acoustical Society of America, 2013-10);Second order mode statistics as a function of range and source depth are presented from the Long Range Ocean Acoustic Propagation EXperiment (LOAPEX). During LOAPEX, low frequency broadband signals were transmitted from ...
Staten, Robert A. (Monterey, California. Naval Postgraduate School, 1995-09);As part of the modeling effort in the Acoustic Thermometry of Ocean Climate (ATOC) project, the influence of mesoscale, gyrescale and seasonal ocean variability on three-dimensional (3D) acoustic ray paths from the planned ...