[time-nuts] Loran, GPS, Lightning, Timing

Collins, Graham CollinG at navcanada.ca
Tue Jun 24 13:35:36 EDT 2014


Indeed, very interesting. I stumbled across this the other day. After a preliminary read of one of their documents:

A World-Wide Low-Cost Community-Based Time-of-Arrival Lightning Detection and Lightning Location Network

Found here:  http://www.blitzortung.org/Webpages/index.php?lang=en&page=3

I am seriously considering involved as I am a bit of a weather nut too.

There are other similar projects too, this is one: http://lightningradar.net/

At the moment it seems there are only a handful of participating stations in North America.


Cheers, Graham ve3gtc



-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On Behalf Of Tom Van Baak
Sent: June-24-14 12:52 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Loran, GPS, Lightning, Timing

A friend pointed me to this site:

US http://www.blitzortung.org/Webpages/index.php?lang=en&page_0=30
EU http://www.blitzortung.org/Webpages/index.php?lang=en

This is a wonderful out-of-the-box project, with echoes of Loran-C and GPS triangulation. It's also a clever combination of home-brew receivers, UTC timestamping, the web, and global participation. You'll find technical details on the site; it makes good reading for any time nut. And adds new meaning to "pulse per second"...

Two questions.
1) Is anyone on the list a participant in this effort?

2) Can you imagine applying this entire process in reverse. That is, instead of using GPS to timetag lightning strikes, use lightning strikes to synchronize a global network of local clocks. Ok, getting accurate time and disciplining clocks with GPS or NTP or WWVB is too easy so why bother. But it would be interesting to use this raw data to set, calibrate, and discipline local clocks, as an redundant method, independent of existing broadcast T&F sources. Some crunching on the data would at least determine what level of precision could be obtained with a, what shall we call it, CLDO (Coordinated Lightning Disciplined Oscillator).

/tvb
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