[time-nuts] GPS receiver testing
k4cle at aol.com
k4cle at aol.com
Thu Nov 1 00:31:05 UTC 2012
Magnus,
Most GPS simulators only have an OCXO in them which are not very good for
making precision timing measurements. The simulator needs to have a
rubidium in it or have an external input for a more precision frequency
source.
Regards,Doug
Connected by DROID on Verizon Wireless
-----Original message-----
From: Magnus Danielson <magnus at rubidium.dyndns.org>
To: time-nuts at febo.com
Sent: Thu, Nov 1, 2012 00:11:51 GMT+00:00
Subject: Re: [time-nuts] GPS receiver testing
John,
I would advice you to look at what Spirent and Pendulum can offer you
with regards to GPS simulators. The Pendulum GPS simulation should be of
interest as it is a fairly decent cost, where as the Spirent equipment
is really really good. One way to characterize PPS properties is to do
it against a GPS simulator, which would allow you to remove some
uncertainties compared to live signal.
Said's pointers are indeed a good start, so I only wanted to give an
extra dimension which you might need.
Cheers,
Magnus
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