Determining lightning polarity (positive or negative) by raw signal processing?

[cutty]

Observations from long distance are not relevant, as they can be reflections  :-)

/Richo

Exactly.... and which channel is referenced for phasing?

http://onlinelibrary.wiley.com/doi/10.10...10294/full

Positive Ground strokes tend to single discharge events... negative tends to multiple discharges. even tthat rule of thumb isn't always valid....

https://www.ikhebeenvraag.be/mediastorag...liksem.pdf