[Xastir] New code testing

[BobDonnell at arkalmus.com]

I know!  I know!  (waves hand franticly)

Place 4 (or more) GPS floats with ultrasonic data stream transmitters,
sending their data syncronized to the GPS time of day info.  Use a
spread-spectrum audio technique, so the signalling from the ultrasonic
sender on each GPS receiver float can be differentiated from others.
The floats can use WAAS and/or DGPS to increase the accuracy of their
fixes.  And the propogation delays from each ultrasonic sender can be
used to triangulate the exact location of the ultrasonic receiver.
Sorta like the RF side of GPS...  Huh!  What a concept!  :-)

73, Bob, KD7NM

>-----Original Message-----
>From: xastir-bounces at xastir.org [mailto:xastir-bounces at xastir.org]On
>Behalf Of Curt Mills, WE7U
>Sent: Thursday, July 24, 2003 12:36 PM
>To: Chris Bell
>Cc: xastir at xastir.org
>Subject: Re: [Xastir] New code testing 
>
>
>On Thu, 24 Jul 2003, Chris Bell wrote:
>
>> Now, if only GPS worked underwater... I tried.  About 2 inches of
>> water completely absorb the sat signals.  I would love to have geo
>> tags on the pics... :) Hmm... SSTV from a towed float?
>
>I believe the military has this figured out.  They two the GPS
>antenna (or perhaps the whole GPS these days) on a float.  If it
>wouldn't prove a safety hazard for the diver, it might be worth a
>shot.
>
>-- 
>Curt Mills, WE7U                    hacker_NO_SPAM_ at tc.fluke.com
>Senior Methods Engineer/SysAdmin
>"Lotto:    A tax on people who are bad at math!"
>"Windows:  Microsoft's tax on computer illiterates!" -- WE7U
>"The world DOES revolve around me:  I picked the coordinate system!"
>
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