Transmitting station for a position locating system, particularl

Details Transmitting station for a position locating system, particularl Transmitting station for a position locating system, particularl

1992-07-13

1993-09-28

Issing, Gregory C.

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

Directive

Beacon or receiver

342 35, 342173, G01S 116, G01S 1300, G01S 740

Patent

active

052489833

ABSTRACT:
In contrast with conventional transmitting stations for a position locating system in which the main equipment and the standby equipment operate alternately and are monitored by checking the transmitted signal received from external sensors, the present invention monitors at least the standby equipment during inactive periods during which no signal is being transmitted. In a preferred embodiment, external sensors (FS, MF) are provided for monitoring both the main transmitter (TXM) and the main timing and control section TCS1) during transmission periods, a dummy load (DL) and an internal sensor (IS) is used for monitoring the standby transmitter (TXR) during non-transmission periods, internal monitoring information (MI) is used for monitoring the reserve timing and control section (TCS2) and the electronic antenna (EA), and the two monitor sections (MS1, MS2) contained in the monitor unit are used to monitor each other.

REFERENCES:
patent: 4757316 (1988-07-01), Brault et al.
patent: 4940984 (1990-07-01), Kleiber
patent: 5132692 (1992-07-01), LaBerge
Seymour et al; "Design Considerations for Achieving MLS Category III Requirements", Proc. IEEE, vol. 77, #11, Nov. 89; pp. 1752-1761.
B. Letoquart, "The MLS in France", Microwave Journal, vol. 24, #5, May 1981, pp. 113-120.

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