Accession Number : AD0669114

Title :   EXPERIMENTAL FM MULTIPLEXING TRANSPONDER SYSTEM FOR REMOTE RADIO CONTROL AND TELEMETERING.

Descriptive Note : Final rept. 1 Jul 66-27 Jul 67,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Wooten,S. J. ; Elliott,L. J. ; Phelps,S. L.

Report Date : APR 1968

Pagination or Media Count : 48

Abstract : An experimental FM multiplexing transponder system was designed to trigger the ventilation closure valves of protective shelters as soon as the overpressure produced by a nuclear blast is detected by a pressure transducer. The system would provide complete protection for shelters located 12,000 feet or more from the target. The system consists of five FM multiplexing transponders transmitting five channels of FM data to the central receiver, one channel at a time, with each transponder initiating the next transponder transmission. Only one carrier frequency is used regardless of the number of transmitters; also, since the transponders transmit data only on interrogation, battery life is greatly increased. The flexibility of this battery powered system, its ability to accept a wide variety of emergency inputs, its fail-safe design, and its low cost make it suitable for a wide variety of data transmission applications. (Author)

Descriptors :   (*TRANSPONDERS, REMOTE CONTROL), (*DATA TRANSMISSION SYSTEMS, TRANSPONDERS), FREQUENCY MODULATION, COMMAND AND CONTROL SYSTEMS, TELEMETER SYSTEMS, MULTIPLE OPERATION, TELEMETERING RECEIVERS

Subject Categories : Telemetry
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE