3 ms·
I think he missed a couple important points. The sweep effect, shaking and aiming are more amenable to signal processing than it seems, depending on the resolut
by darkmighty 12y ago
I think he missed a couple important points. The sweep effect, shaking and aiming are more amenable to signal processing than it seems, depending on the resolution and noise in the system. I tried to illustrate in pictures:
1) Just to demonstrate that a nonuniform sweep is amenable to detection or processing, consider this picture, with the correct estimate in green:
http://imgur.com/FsPAwCn http://imgur.com/FsPAwCn
2) Now imagine the device is more sophisticated. Consider it has a very large resolution around the incoming pulse:
http://imgur.com/z8UrhUw http://imgur.com/z8UrhUw
In this case the beam width is actually beneficial, and so are large distances. The sweep effect would cause a shift in the peak intensity shown in the graph, but the object depth frustrum should be clear across samples (and dislocating at t'=t-v*dt/c).
3) Officers can be trained to recognize situations unforable, regardless of distance. One fast car passing a slow one would make it easy to confuse the equipment. A clear desert however doesn't present many threats for error.
- Trombone5 12y agoI think its funny how he claims location sampling at different times is not a measurement of speed. It's strange how he mentions the sampling speed, but then pretends it's 1/3 second. Basically what he is attacking is the worst design of a speed gun that he could imagine from the public information. A more fair challenge would be to find sufficient error from a competent design of a speed gun, but then it wouldn't be as self serving.