Communications – electrical: acoustic wave systems and devices – Transponders – Sonobuoys and sonobuoy systems
Patent
1995-05-30
1996-12-03
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Transponders
Sonobuoys and sonobuoy systems
367125, 367129, 367153, H04R 2300, H04B 159
Patent
active
H00016187
ABSTRACT:
By incorporating a Global Positioning System (GPS) receiver into the electronics of an active or passive sonobuoy for determining a geoposition of each sonobuoy comprising an array of sonobuoys or a sonobuoy field, the position of each sonobuoy can be ascertained as the original position of the line of sonobuoys forming the array changes due to wind, sea state and currents. The GPS geoposition of the individual sonobuoys is transmitted to as receiving vehicle along with the acoustic signal obtained by the sonobuoy sensor. Utilizing an onboard computer, the receiving vehicle can compute a synthesized coherent array position. The military P(Y) code transmitted by the GPS satellites is utilized to determine the geoposition of the sonobuoy relative to the other sonobuoys to a degree of accuracy of 2 to 3 meters. If the use is by a civilian activity, the civilian coarse access (C/A) code may also be utilized with a decrease in individual sonobuoy accuracy to 100 meters, however, by application of a broadcast correction, the degree of accuracy obtained utilizing the military P(Y) code can be achieved.
Eldred J. Woodrow
McDonnell Thomas E.
Stockstill Charles J.
United States of America
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