Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1983-01-24
1985-02-26
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343461, G01S 302
Patent
active
045020523
ABSTRACT:
A passive data determination system (10) for use in a traveling projectile (12) is provided including a logarithmic receiver (20) for receiving a power signal P.sub.r from a source target (14) and emitting in response thereto an output voltage signal E.sub.o which is proportional to the logarithm of P.sub.r. A clock pulse signal is provided, such as by an oscillator (22) to measure a change in output voltage .DELTA.E.sub.o. Means such a microprocessor (28) provides a signal R which is a function of Kv.multidot.(.DELTA.t/.DELTA.E.sub.o), where K is equal to -2 (log e) and V is a known relative velocity between the projectile (12) and the target (14) and which indicates the range of the projectile to the target.
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Avco Corporation
Blum Theodore M.
Ogman Abraham
Steinberger Brian
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