Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1986-03-05
1988-04-19
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
G01S 134
Patent
active
047393335
ABSTRACT:
A distance-measuring receiver and system uses a transmitter which transmits only a single continuous-wave signal. The receiver produces a first component and a second component from the received signal. The first component is frequency doubled and used to produce a signal indicative of the beginning of a measurement window. The second component is used to produce a signal indicative of the end of the measurement window. The size of the measurement window can be used to produce a real time indication of the position of the receiver form the transmitter.
REFERENCES:
patent: 3171127 (1965-02-01), Asteraki et al.
patent: 3689925 (1972-09-01), Hulland
patent: 3747106 (1973-07-01), Dalabakis et al.
Barron Jr. Gilberto
Blum Theodore M.
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