John,
It looks like you’re in trouble then!
From: Laurie Elfrank
Sent: Friday, March 25, 2016 8:25 PM
To: Geocaching Newsgroup
Subject: [GeoStL] Re: Gizmodo: New Technique Makes GPS Accurate to an Inch
I just saw this! So, what it says, is the government will now know where your
phone it located, within an inch, by monitoring the sensor in your phone. They
can lock on with the satellite laser or an aerial drone and zap your ass for
farting in the wind and causing global warming. That's nice!
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From: GLNash@xxxxxxxxxx
To: geocaching@xxxxxxxxxxxxx
Subject: [GeoStL] Gizmodo: New Technique Makes GPS Accurate to an Inch
Date: Fri, 12 Feb 2016 12:11:28 -0600
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Gizmodo: New Technique Makes GPS Accurate to an Inch
http://gizmodo.com/a-new-technique-makes-gps-accurate-to-an-inch-1758457807
------------ QUOTE ----------
GPS is an utterly pervasive and wonderful technology, but it’s increasingly not
accurate enough for modern demands. Now a team of researchers can make it
accurate right down to an inch.
Regular GPS registers your location and velocity by measuring the time it takes
to receive signals from four or more satellites, that were sent into space by
the military. Alone, it can tell you where you are to within 30 feet. More
recently a technique called Differential GPS (DGPS) improved on that resolution
by adding ground-based reference stations—increasing accuracy to within 3 feet.
Now, a team from the University of California, Riverside, has developed a
technique that augments the regular GPS data with on-board inertial
measurements from a sensor. Actually, that’s been tried before, but in the past
it’s required large computers to combine the two data streams, rendering it
ineffective for use in cars or mobile devices. Instead what the University of
California team has done is create a set of new algorithms which, it claims,
reduce the complexity of the calculation by several order of magnitude.
In turn, that allows GPS systems in a mobile device to calculate position with
an accuracy of just an inch. The research is published in IEEE Transactions on
Control Systems Technology.
The team hopes that the new GPS units could be used where accuracy is far more
important that it was in the past. Autonomous vehicles is an obvious
application, where knowing exactly where the vehicle is on the road is
absolutely crucial—but it could be included in your phone, too.
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Glenn
