Interesting document/presentation on LIDAR "radar speed guns

[spants]

Interesting document/presentation on LIDAR "radar speed guns"
https://news.ycombinator.com/item?id=8114336

[ging84]

you seem to have linked to a load of nonsense comments not the actual presentation

[TheEnd]

Looks like you have to click on the text at the top, possibly this if it works -
https://docs.google.com/file/d/0B941PmRjYRpnX3ZqLW...


edit, he starts off moaning about the semantics of saying they measure "speed", saying it measures time, and estimates speed.

He sounds like a big sour cry-baby.

Edited by TheEnd on Thursday 31st July 18:54

[spants]

Yes link is at the top.

So you read all of the presentation?
It talks about the spread of the beam - so reading can come from two cars - and also the reflections can come from different parts of the same car can add significant amount of "speed" to the reading.