[FoxHunt] TDOA questions.
C.Whitaker
whitaker at pa.net
Fri Aug 6 22:49:37 EDT 2010
de WB2CPN
I was stationed at Kadena on Okinawa when the Wullenweber antenna
was installed near there in the mid 60's. Hanza was a village of four or
five houses. The real name should be Yontan because that was the old
airstrip that the Wullenwebber was built on. The interesting thing about
that design of a circle of horizontal multi-frequency antennas is the way
in which the directivity could be controlled. If there was only one
operator,
doing only one thing, a simple capacative goinometer and some delay
lines would suffice, but it was not that way at all. Each antenna fed a
branching amplifier which had, lets say, 12 outputs. That means there
could be as many as 12 different goinometers, all looking in different
directions. And, more than 1 goinometer could be assigned to the
same output on the branching amps if the operators didn't try to look
over each other's shoulders. So, the Wullenwebber's great advantage
was that it could perform various functions which were not necessarily
interrelated. The last one I know of was in Florida.
73 Clete
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