Posts: 2

Threads: 1

Joined: 2015-06-27

When zooming in on the maps so that the scale is 1000 feet (or 200 meters), the colored lightning strike dots will be surrounded by circles. The circles are different sizes. What does this mean? Is the position of the strike calculated more accurately, the smaller the circle?

This is my first post, and I didn't see this addressed elsewhere.

Posts: 890

Threads: 44

Joined: 2013-07-23

2015-07-02, 18:07
(This post was last modified: 2015-07-02, 18:08 by Cutty.)
(2015-07-02, 14:41)Quasar1011 Wrote: When zooming in on the maps so that the scale is 1000 feet (or 200 meters), the colored lightning strike dots will be surrounded by circles. The circles are different sizes. What does this mean? Is the position of the strike calculated more accurately, the smaller the circle?

This is my first post, and I didn't see this addressed elsewhere.

The short answer to your question is 'Yes'... the smaller the 'deviation' circle, the better 8 or more stations agreed on a 'location' based on GPS timing at stroke arrival at those stations. The smaller the circle, the closer the timing computations resolve. Not to be confused with the

"eye-candy" (if you will) moving thunder sonic front approximation (if enabled) on some 'real-time' maps...

Cheers!

Mike

Posts: 2

Threads: 1

Joined: 2015-06-27

The deviation circles now have time stamps on them, very cool!

But what are the numbers on the bottom? S: 11/28 or the like?

Does S mean

Stations, and the numbers mean how many stations

detected a particular bolt? If so, what does the other number represent?

Posts: 1,941

Threads: 60

Joined: 2012-06-26

Numbers represent stations to locate (= used for computation) and all assigned stations (= those that just detected the stroke)

Posts: 536

Threads: 59

Joined: 2012-08-15

If we use a higher number of stations for computation. Does it improve the accuracy or it has a kind of asymptotic behavior?

Posts: 1,941

Threads: 60

Joined: 2012-06-26

The numbers are already that high, more stations wouldn't improve the accuracy significantly. Better computing algorithms will have much more impact on the accuracy. There's work in progress...