chaotic signal cryptography

On Mon, 11 Dec 1995 12:00:38 -0500 (EST), L. Den-Hollander wrote (in part):

A few years back i ran thru a paper emanating from a navy labs researcher (i think the name was Peccora) about using synchronised chaotic signal generators as a signal scrambling/encrytpion scheme.

I too am interested in this technique. I may be wrong, but it seems like a variation on the one-time pad. Any comments on this technique (usefulness, robustness, etc.)? Hooker