Happy Trails wrote:
On Tue, 24 Jun 2008 12:19:42 -0700 (PDT), wrote:

http://www.qinetiq.com/home/capabili...ivity_gps.html

=============

It's definitely NOT RTK.

So it is not a "high accuracy" gps - in fact the accuracy specs for
the gps module from this company are not quite as good as my 76csx,
and the acquisition times are identical - hmmmm!

It does purport to work indoors, but the stated accuracy goes from 5m
typical to 50m typical, according to their specs, so why bother.

The fastest (and only) update rate I found in any of their specs was
in one module, which was "15.625 Hz (64 mS) inc. raw data (code and
carrier)".

Even Trimble systems using Trimble RTK receivers capable of 20 Hz
position estimates tell you not to set the update rate to any faster
than 10 Hz or it won't work properly (GCS900).

It seems this is just some more ho-hum misinformative marketing
hoopla!


But it does have very impressive sensitivity, 189 db, against more
typical 150-160 db of most GPS units. If they actually achieve that, it
is pretty useful in many applications.

--
Regards,

Adrian Jansen adrianjansen at internode dot on dot net
Design Engineer J & K Micro Systems
Microcomputer solutions for industrial control
Note reply address is invalid, convert address above to machine form.