Coherent arrays of drifting sonobuoys
USH1618H · kind H · statutory invention registration
Assignee
Inventor
Key dates
| Filing date | — |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | — |
Classification
- Technology area (CPC —)General
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.