The position is solely defined by the location of the antenna. Once all of
the satellite signals enter the antenna, the time differences are fixed,
only the absolute time changes. The GPS receiver computes the position of
the antenna using time differences. The coax cable length can affect the
time, unless compensated for the propagation delay.
John WA4WDL
--------------------------------------------------
From: "Rex Moncur" <rmon...@bigpond.net.au>
Sent: Tuesday, September 13, 2011 6:28 PM
To: "'Discussion of precise time and frequency measurement'"
<time-nuts@febo.com>
Subject: Re: [time-nuts] Averaging Location for Position Hold
Hi All
In my case the Google Earth position cf if the GPS averaged position is
within 3 metres of the physical position of my GPS RX but about 8 metres
from the physical position of my GPS antenna. Can anyone tell me if the
length of the cable has any affect on the GPS reported position or is the
position defined solely on the position of the antenna?
Rex VK7MO
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