"Gerald Sylvester" wrote in message
ink.net...


I never read anything about this Scott Petersen murder
trial before. I saw a headline about a "GPS." I started
to read it and I guess the guys car had a GPS in it
and the prosecution is trying to place him at the murder
scene. Well the defense attorney is saying the GPS
is inaccurate due to a malfunction and made the
moronic comment of:
-------------
Peterson's attorney, Mark Geragos, argued that the information gathered
through global positioning system technology was not accurate. GPS uses
signals from dozens of satellites to show a receiver's position to
within a few feet.

"If the FAA will not approve GPS for the landing of an aircraft, how can
a court of law approve its forensic use in a capital case?" he said.
--------------

I don't know if they are approved for auto-landing but
I'm fairly certain it can get me a few hundred feet AGL
on the exact glideslope of an airport 8000 miles away.
I'd generally consider that accurate enough. grin

My handheld GPS-V for my car has lead me to within a few
feet of the front *main* door of places in Amsterdam, Rome,
New York and San Francisco. I'd generally consider that accurate.

Unaugmented GPS is accurate to within 7.2 meters longitudinally.