Passive optical air traffic alert system

Details Passive optical air traffic alert system Passive optical air traffic alert system

1989-11-07

1991-10-15

Orsino, Joseph A.

Communications: electrical

Aircraft alarm or indicating systems

Potential collision with other aircraft

342 29, 362 62, 364461, G08G 500

Patent

active

050578332

ABSTRACT:
A device and method for detecting the presence of nearby aircraft which have a strobe-type, anticollision signalling device with respect to a monitoring aircraft. Incoming radiation is detected, including (i) background radiation (ii) pulse-like radiation occurring in random manner, and (iii) pulse-like radiation characterized by uniform periodic pulse rate. Background radiation is filtered, leaving a signal representing pulse-like radiation occurring either in random manner and/or periodic regularity. Those signals having periodic regularity are identified and recorded as pulse trains which provide the basis for generating an alarm indicating detection of a strobe anticollision device. Additional devices and procedures are applied with respect to the invention to define its accuracy and economy as part of a passive optical traffic alert system for small aircraft.

REFERENCES:
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patent: 3563651 (1971-02-01), Alvarez et al.
patent: 3572928 (1971-03-01), Decker, Jr. et al.
patent: 3620626 (1971-11-01), Daly et al.
patent: 3731082 (1973-05-01), Blaylock
patent: 4277170 (1981-07-01), Miles
patent: 4477814 (1984-10-01), Brumbaugh et al.
patent: 4527158 (1985-07-01), Runnels
patent: 4724312 (1988-02-01), Shaper

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