Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1984-09-28
1986-12-02
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
342462, 342430, 342458, 364449, G01S 302, G01S 502
Patent
active
046268618
ABSTRACT:
A passive system and related methods for detecting range and/or elevation of a target by using an X beam antenna system and by measuring the time delay between receipt of signals in the two planes of the X beam which are received directly from the target and by measuring the time delay between receipt of signals in the two planes of the X beam which signals are emitted by the target but reflected from a remote surface. By knowing these two time delays, the height of the antenna system, the fixed angle between the two planes of the X beam and the rate of rotation of the X beam, a direct calculation is established to determine the range and/or elevation of the target.
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Blum Theodore M.
Issing Gregory C.
The Boeing Company
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