🚀 go-pugleaf

Hi,

	I've been told, by those who ought to know, that you can take 3 or
more sonar transponders, send out a pulse, and then watch what happens to
all three of them on the return trip to get an entire effective 360 deg.
sweep of whatever you're looking at.  Supposedly almost as good as having
one rotating transponder, but no more need to rotate -- neat.

	So... could someone give me a reference to where I could read all
the details about how this is done?  Or, if it ought to be glaringly
obvious and simple, explain how it's done?

	Thanks.

						---Joel Kolstad