[LEAPSECS] GPS certified for navigation?

[Steve Allen]

On Thu 2010-09-23T20:45:45 -0400, Jonathan E. Hardis hath writ:

> As the link makes clear, WAAS is funded by the FAA "for aircraft," not

> "for surveying."


As the folks who are trying to abandon leap seconds seem to think,
just because something was designed for one thing doesn't mean it
can't be used for something else.

There are now handheld GPS units which have WAAS but are not certified
for flight.  Instead they have the ability to display coordinates not
in Lat/Long, but in State Plane Coordinates.  These are being used
for surveying, and not for precision geodesy of the sort needed for
crustal deformation caused by tectonics.

--
Steve Allen                 <sla at ucolick.org>                WGS-84 (GPS)
UCO/Lick Observatory        Natural Sciences II, Room 165    Lat  +36.99855
University of California    Voice: +1 831 459 3046           Lng -122.06015
Santa Cruz, CA 95064        http://www.ucolick.org/~sla/     Hgt +250 m