> analog techniques used in contrast-tracking aka edge detection :) I don't remember if it was the Sidewinder or Walleye that eventually dropped in a CCD (or b

> analog techniques used in contrast-tracking aka edge detection :) I don't remember if it was the Sidewinder or Walleye that eventually dropped in a CCD (or both), but I know that the Maverick (which is technically older than Walleye) got along without a CCD until the GWOT - when it finally upgraded. The Javelin actually beat Maverick in that regard, having a 64x64 sensor 10 years earlier - able to handle scaling and perspective change for the 2-d designated target pattern. https://apps.dtic.mil/dtic/tr/fulltext/u2/a454087.pdf https://apps.dtic.mil/dtic/tr/fulltext/u2/a454087.pdf