Event Title

Sonobuoy Mils

Start Date

4-1969 8:00 AM

Description

The purpose of this paper is to describe a new technique for locating missile impact positions in the open ocean using Navy sonobuoys. Figure 1 shows a typical Navy ASW sonobuoy, an air-dropped, expendable VHF radio that relays the underwater acoustic signals received on a hydrophone beneath it to an aircraft overhead* This missile impact location system has the advantages of being low cost, portable and capable of high accuracy. Basically the sonobuoys monitor the hydroacoustic signal of a missile impact on the ocean's surface and use fixed ocean bottom transponders as a geodetic reference for the sonobuoys* Heretofore we have used aircraft dropped sofar charges as an acoustic tie between the surface sonobuoys and the ocean bottom transponders. Impact accuracy in this sonobuoy system of 0.1 NM is possible. In the future, with a little more hardware development, the use of active sonobuoys will eliminate the need for the sofar charge reference tie and the upgraded SMILS will have an accuracy of 250'.

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Apr 1st, 8:00 AM

Sonobuoy Mils

The purpose of this paper is to describe a new technique for locating missile impact positions in the open ocean using Navy sonobuoys. Figure 1 shows a typical Navy ASW sonobuoy, an air-dropped, expendable VHF radio that relays the underwater acoustic signals received on a hydrophone beneath it to an aircraft overhead* This missile impact location system has the advantages of being low cost, portable and capable of high accuracy. Basically the sonobuoys monitor the hydroacoustic signal of a missile impact on the ocean's surface and use fixed ocean bottom transponders as a geodetic reference for the sonobuoys* Heretofore we have used aircraft dropped sofar charges as an acoustic tie between the surface sonobuoys and the ocean bottom transponders. Impact accuracy in this sonobuoy system of 0.1 NM is possible. In the future, with a little more hardware development, the use of active sonobuoys will eliminate the need for the sofar charge reference tie and the upgraded SMILS will have an accuracy of 250'.

 

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