Re: [PSUBS-MAILIST] UW-DGPS

[SJSVOB@aol.com]

<< If anyone knows of a way to work a GPS in a submerged PSUB without dragging
 a floating antenna, I'd sure like to hear about it.  As it stands (without
 any real study into the matter) I don't think the signal will penetrate to
 any appreciable depth.  I hope I'm wrong.  I'd love to be able to navigate
 accurately underwater. >>

I've been thinking about building a device which interfaces to a GPS, only 
when it loses the satellites it switches into inertial navigation mode, and 
when a pressure transducer notices an increase in pressure it switches from 
altitude readings to depth readings.  Would any of you be interested in such 
a unit?

Stephen