Re: Synchronising PC clock on the GPS time using GPS receiver

dold_at_Synchronis.usenet.us.com
Date: 08/26/04


Date: Thu, 26 Aug 2004 23:42:02 +0000 (UTC)

John Navas <spamfilter0@navasgroup.com> wrote:
> My basic point is that the OP could instead use NMEA software that can set the
> PC clock with possible other GPS benefits.

> One such option is GPS Pac 2.2 for Windows, available for free download at
> <http://vancouver-webpages.com/peter/idx_automap.html>.

I loaded that one. I see "-PC clock synchronisation (using GPS UTC time)"
in the features list, but I don't see it in the program anywhere.
Is that added if you register, or is it always doing the correction?
$99 to register? That's kind of steep, compared to free for the gpsNMEA
< http://vancouver-webpages.com/peter/idx_nmeaprog.html >
It doesn't do the PC-set, but you can see the GPS time, and make the
time setting yourself ;-)

-- 
---
Clarence A Dold - Hidden Valley (Lake County) CA USA  38.8-122.5


Relevant Pages

  • Re: VAX floating-point instruction timing?
    ... Not all clock ticks are the same. ... There were stretched clock cycles on at least one VAX box; there was a VAX with two different lengths for its clock cycle, depending on what is going on in the i-stream. ... Yeah, I know, they weren't completely compatible with each other but they all implemented the architecture modulo various subsets and the inevitable bug that would creep in. ... I intend to use register renaming in such a way that 1) every register modification goes to a new physical register and 2) there are sufficiently many more physical than architected registers that all the original register values are kept untouched by even the worst case autoupdating instruction. ...
    (comp.sys.dec)
  • Re: The Speed of Gravity =?windows-1252?Q?=96_What_the_Exp?= =?windows-1252?Q?eriments_Say?=
    ... continually changing synchronization corrections for each clock exist such that the predictions of SR are fulfilled for any local co-moving frame. ... To avoid the embarrassment of that complexity, GPS analysis is now done exclusively in the Earth-centered inertial frame. ... And the pre-launch adjustment of clock rates to compensate for relativistic effects then hides the fact that all orbiting satellite clocks would be seen to tick slower than ground clocks if not rate-compensated for their orbital motion, and that no reciprocity would exist when satellites view ground clocks. ... Now, if one can provide a way for a ground receiver to synchronize its clock with the satellite clock, a simple measurement of the time delay in the signal received from a satellite in view of the Earthbound user, should result in a precise range to that satellite. ...
    (sci.physics)
  • Re: Re: C S Lewis
    ... >> velocity between the earth bound observer and the GPS sattelite, ... > dilation was with a long rod with a light source and reflector at each ... Relativity, both special and general, I highly reccomend the following ... between the observer and the clock, ...
    (talk.origins)
  • Re: The physics of music.
    ... changing synchronization corrections for each clock exist such that the ... that the GPS continues to operate with great accuracy has in fact ... relativity in the global positioning system, ... The design life of each satellite is 7.5 years.) ...
    (sci.physics)
  • Re: GPS GR Correction Myth.
    ... >> The first GPS satellite had the ability to turn on or off a hardware ... >> hardware or software adjustment made at the satellite after it is ... The receiver takes the actual clock reading and the correction ... The satellite clock is NOT changed. ...
    (sci.physics.relativity)