John Locker schreef: > So I was scratching around to find a stopwatch , when I realised that my > portable car GPS has an illuminated clock display , which should be > about as accurate as I could expect... Hi John and others, In this case, where being even 1 or 2 seconds "off" still leads to valuable data, it is good enough. But when you want times to an accuracy better than a second, the displays of GPS receivers aren't good enough. While the time the receiver gets from the satellite is very accurate, the time they show in the display can be quite off with most consumer receivers. I have frequently noted 1-2 seconds with mine. The priority of the receiver software is on the position data, and it takes some time before times received are output to the display. This depends on the exact brand and type of receiver of course. - Marco ----- Dr Marco Langbroek - SatTrackCam Leiden, the Netherlands. e-mail: sattrackcam@wanadoo.nl Cospar 4353 (Leiden): 52.15412 N, 4.49081 E (WGS84), +0 m ASL Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html Station (b)log: http://sattrackcam.blogspot.com ----- ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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