Impact of GFO Satellite on Naval Antisubmarine Warfare

The purpose of this study is to assess the benefit of assimilating satellite altimeter data especially the US Navy's GFO into the Modular Ocean Data Assimilation System (MODAS). To accomplish this, two different MODAS fields are used by the Weapon Acoustic Preset Program (WAPP) to determine sug...

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Bibliographic Details
Main Authors: Chu, Peter C, Amezaga, Guillermo, Gottshall, Eric L, Cwalina, David
Format: Report
Language:English
Subjects:
ACOUSTIC WAVE PROPAGATION
ACOUSTIC WAVES
ANTISUBMARINE WEAPONS
BRIEFING CHARTS
METEOROLOGICAL SATELLITES
MILITARY SATELLITES
MODAS(MODULAR OCEAN DATA ASSIMILATION SYSTEM)
NATO FURNISHED
OCEAN ENVIRONMENTS
OPTIMUM INTERPOLATION
ORBIT ANALYSIS
Physical and Dynamic Oceanography
RADIO ALTIMETERS
SALINITY
SSH(SEA SURFACE HEIGHT)
SSP(SOUND SPEED PROFILES)
SURFACE TEMPERATURE
SYMPOSIA
Undersea and Antisubmarine Warfare
Unmanned Spacecraft
WAPP(WEAPON ACOUSTIC PRESET PROGRAM)
WAVE PROPAGATION
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Summary:The purpose of this study is to assess the benefit of assimilating satellite altimeter data especially the US Navy's GFO into the Modular Ocean Data Assimilation System (MODAS). To accomplish this, two different MODAS fields are used by the Weapon Acoustic Preset Program (WAPP) to determine suggested presets for a Mk 48 variant torpedo. The MODAS fields differ in that one uses altimeter data assimilated from three satellites while the other uses no altimeter data. The metric used to compare the two sets of outputs is the relative difference in acoustic coverage area generated by WAPP. Output presets are created for five different scenarios, two Anti-Surface Warfare scenarios and three Anti-Submarine Warfare scenarios, in each of three regions: the East China Sea, Sea of Japan, and an area south of Japan that includes the Kuroshio current. Analysis of the output reveals that, in some situations, WAPP output is very sensitive to the inclusion of the altimeter data because of the resulting differences in the subsurface predictions. The change in weapon presets could be so much that the effectiveness of the weapon might be affected. Prepared in collaporation with the U.S. Office of Naval Research Global, London, United Kingdom and the Naval Undersea Warfare Center, Newport, RI. Presented at the Specialists' Meeting organised by the Space Science and Technology Group, co-sponsored by the Romanian Space Agency and the US Air Force European Office of Aerospace Research and Development, at the National Military Circle, Bucharest, Romania, 6-7 Sep 2006 and published in the proceedings as paper 9. See ADM202419, Emerging and Future Technologies for Space-Based Operations Support to NATO Military Operations, RTO-MP-RTB-SPSM-001. The original document contains color images.