TCAS bearing estimation receiver using a 4 element antenna

Details TCAS bearing estimation receiver using a 4 element antenna TCAS bearing estimation receiver using a 4 element antenna

1988-03-18

1989-08-08

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

342374, 342420, 364461, G01S 302

Patent

active

048557480

ABSTRACT:
A direction finding receiving system for use on a protected aircraft in which a signal from an ATCRABS transponder on an intruder aircraft is received has been described incorporating a four element interferometer type antenna array, reversing switches, individual receivers, a phase detector and a processor for processing the outputs of the phase detector. The invention overcomes the problem of correcting for the difference in phase delay of signals passing through the receivers.

REFERENCES:
patent: 4395778 (1983-07-01), Osada et al.

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