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| GeoCommunity Mailing List |
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| Subject: | RE: [gislist] GPS underwater |
| Date: |
09/22/2003 08:05:00 PM |
| From: |
Bill Diaz |
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A GPS receiver cannot function if the antenna is under water. The water
completely blocks the GPS signals.
I have heard of underwater GPS applications, but the antenna was mounted on
a buoy floating on the surface. Excessive wave height can block access to
all available satellites, and the wave action itself can cause the GPS to
supply somewhat erratic data. If the underwater object is moving, the
antenna cable must be longer than the depth of the object. This means that
the antenna will not be directly above the object. Similar effects will be
observed in the presence of high winds or currents.
Bill
>-----Original Message-----
>From: gislist-bounces@lists.geocomm.com
>[mailto:gislist-bounces@lists.geocomm.com] On Behalf Of bader nader
>Sent: Monday, September 22, 2003 12:11
>To: arcgis@lists.directionsmag.com
>Cc: gislist@lists.geocomm.com
>Subject: [gislist] GPS underwater
>
>
>hi
>dose any one have information about using GPS
>underwater
>
>regards,
>
>
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