On Mon, Jun 29, 2015 at 8:31 PM, William Ewing (via tml list) <nobody@simplelists.com> wrote:
RADAR: Bam! bearing and range, in digital format for entry into fire control computer. 
 
Sure.  Except with radar, you have to wait for the signal to round trip.  And your radar transmission gives your position away.
 
LIDAR:  Range and bearing, digital.
 
Telescope: nice picture
 
Yup.  Although if you have two of them slightly separated, and hooked to digital cameras, you get range and bearing, in half the time it takes radar, without giving away your position.  Observation over time will give you the object's course and speed, same as radar.
 
 
https://en.wikipedia.org/wiki/Coincidence_rangefinder
 
Note that you don't really need them set up like this, if you have two cameras and know how far apart they are, you can do the same thing with a little math. 
 
 
Ancient but still an OK overview:
 
http://www.ausairpower.net/TE-EO-Systems.html
 
 
 
telescopic alidade: bearing, visually provided. Hand-type. 
Stadimeter: range, visually provided. Hand-type. 
 
 
Again, replace the eyepiece with a digital camera lense, and get your data in digital format.
 
 




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"Any sufficiently advanced parody is indistinguishable from a genuine kook." -Alan Morgan