Emergency locator transmitter incident time correlator

Details Emergency locator transmitter incident time correlator Emergency locator transmitter incident time correlator

1979-12-21

1986-12-16

Chin, Tommy P.

Pulse or digital communications

Repeaters

Testing

455 98, 340981, 340539, 441 11, H04N 102

Patent

active

046302891

ABSTRACT:
In an emergency locator transmitter of a type wherein a standard distress signal is transmitted following a distress incident, the distress signal is encoded with data identifying the absolute time of the incident or the amount of time that has elapsed since the incident occurred. Distress waveform modulation of the carrier is periodically interrupted for insertion of the time signal. In a preferred embodiment, wherein the distress signal includes information burst signals that are periodically transmitted, e.g., every 50 seconds, timing pulses generated synchronously with the burst signals are supplied to a divider circuit for division by a predetermined integer to develop extended time base pulses, e.g., one hour pulse intervals. The extended pulses are accumulated in a binary counter and combined with the information burst signals.

REFERENCES:
patent: 2825803 (1958-03-01), Newbrough
patent: 3643162 (1972-02-01), Ady
patent: 4077005 (1978-02-01), Bishop
patent: 4101894 (1978-07-01), Warner
patent: 4218654 (1980-08-01), Ogawa
patent: 4232391 (1980-11-01), Zanutti
Specification for the Sarsat Experimental 406 MHZ ELT and EPIRB Electronics, Sarsat Document No. D-7, Nov. 14, 1979.
Minimum Performance Standards-Emergency Locator Transmitters, Document No. DO-147, Nov. 5, 1970.
Radio Technical Commission for Aeronautics, Prepared by SC-119.

Affiliated with

Also associated with

Rating

Emergency locator transmitter incident time correlator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Emergency locator transmitter incident time correlator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergency locator transmitter incident time correlator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-250630