Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1993-10-21
1995-01-03
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
375 1, G01S 302
Patent
active
053790472
ABSTRACT:
Position determining apparatus including at least one base transmitter/receiver (BTR) station including a base transmitter which periodically transmits timing signals and a plurality of mobile transmitter/receivers (MTR). Each MTR includes a mobile receiver operative to receive timing signals transmitted by at least one base transmitter; synchronization circuitry receiving the timing signals and providing a spread-spectrum frequency-hopping sequence characteristic of the particular MTR; and a mobile transmitter producing a radiated frequency hopped signal responsive to the frequency-hopping sequence and the timing signal.
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Harel Haim
Yokev Hanoch
Blum Theodore M.
Nexus Telecommunication Systems, Inc.
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