NOSCrptProjCOMBO_1980
NOSCrptProjCOMBO_1980
NOSCrptProjCOMBO_1980
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SEClff<br />
FOREWORD (U)<br />
,;er' Project COM 80* uses coded marine animal sounds for a covert underwater<br />
communications system with ranges to SO nmi. The Project COMBO concept originated in<br />
1959 at the Navy Electronics Laboratory. Collection and analysis of sounds suitable for ultimate<br />
use in Project COMBO began in 1965. We recorded marine animal sounds. mearntl!'d<br />
sound source levels. observed animal behavior and initiated a.:oustic analyses. In I
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