Accession Number : ADA264923


Title :   Real-Time Tomography Mooring


Descriptive Note : Technical rept.


Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA


Personal Author(s) : Lynch, James ; Frye, Daniel ; Peal, Kenneth ; Liberatore, Stephen ; Kery, Sean ; Hobart, Edward ; Newhall, Arthur ; Smith, Stephen


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264923.pdf


Report Date : Jun 1992


Pagination or Media Count : 144


Abstract : A real-time tomography system has been developed which combines ocean acoustic tomography with satellite-based time keeping and satellite telemetry. The basis of the system is the acoustic tomography transceiver and its associated acoustic navigation grid. To this basic system, a link to the surface has been added to provide a pathway for telemetry of the tomographic data to shore and a downlink for satellite-derived time which is used to correct the transceiver's clock. The surface buoy contains a GPS receiver, clock comparator, system controller and multiple ID Argos transmitters. Processed tomography signals, transceiver location data, time, time drift and surface buoy engineering data are transmitted to satellite using a total of 32 data buffers transmitted ever), eight minutes. The report describes the real-time tomography system in detail, with particular emphasis on the modifications implemented to convert the standard tomography instrument to a real-time oceanographic tool. Acoustic tomography, Real-time, Telemetry.


Descriptors :   *TOMOGRAPHY , *MOORING , *ACOUSTIC NAVIGATION , BUFFERS , CLOCKS , REAL TIME , TOOLS , MODIFICATION , GRIDS , TIME , SURFACES , DRIFT , COMPARATORS , BUOYS , SHORES , DOWNLINKS , OCEANS , ENGINEERING , NAVIGATION , SIGNALS , RECEIVERS , ARTIFICIAL SATELLITES , STANDARDS , TRANSMITTERS


Subject Categories : Underwater and Marine Navigation and Guidance
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE