That's funny, I was also thinking of astronomy-- the Schmidt-Cassegrain
telescope where the inherent aberrations of the relatively simple
spherical mirror is corrected (pre-distorted?) with a lens...
73,
Drew
AF2Z
On 09/15/20 18:39, Fred Jensen wrote:
Didn't the term "pre-distortion" originate in the astronomy world where
one creates an artificial star with a powerful laser, and then distorts
the telescope mirror in real time to minimize atmospheric effects
[twinkling]? That also reduces the twinkle on real nearby stars too.
Maybe that's something else. Pre-emphasis/De-emphasis in FM broadcast
[and analog land mobile FM] is sort of pre-distortion too.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 9/15/2020 3:55 PM, Andy Durbin wrote:
" Now I understand better what the discussion is all about."
Who ever coined the term "predistortion" should be taken behind the
bicycle shed and introduced to a 2x4. The terminology is the epitome
of obfuscation!
Andy, k3wyc
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