Re: IR detector again

On  Mon, 11 Nov 2024, Hul Tytus wrote.

  Klaus, you might mount the tubes at a slight outward angle. >When one is
saturated steer toward the other.
  R V Jones' "Most Secret War", which Phil mentioned, describes >a German
navigational aide that quided aircraft on landing. Two beams were >lined
up with the runway but diverging a few degrees. The pilot >approached
keeping the reception of the beams equal.
  Your approach has a higher frequency with reciever/transmiter
altered some. All in all though, suprisingly similar.
>
Hul

It's the fly's ear problem. The fly's ear does this mechanically. You take
the sum and the difference of two signals. If the sum is high enough you
have signal. Then the difference tells you the direction. You try to zero
the difference while maintaining the sum to fly straight at the signal.