Electronic landmark enhancement to GPS based navigation systems

Details Electronic landmark enhancement to GPS based navigation systems Electronic landmark enhancement to GPS based navigation systems

1995-09-22

1998-05-05

Sotomayor, John B.

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

Aircraft landing system

342 43, 342 46, G01S 1391

Patent

active

057481369

ABSTRACT:
A system and apparatus for enhancing the satellite based navigation systems which includes providing an aircraft with an interrogating radar for interrogating beacons disposed at a predetermined location in front of a runway wherein the beacons are radar-activated passively powered runway beacons.

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patent: 5438337 (1995-08-01), Aguado
patent: 5450329 (1995-09-01), Tanner
patent: 5506587 (1996-04-01), Lans
patent: 5534882 (1996-07-01), Lopez

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