METHOD FOR DETECTION OF RANGE OF AIRCRAFT RESPONDING BEACON ALONG EARTH-AIRCRAFT LINE DURING FLIGHT TEST Russian patent published in 1997 - IPC

FIELD: radars. SUBSTANCE: method involves radial flight of aircraft towards earth inquiry station or from earth inquiry station, detection of distance at which response mark appears (or disappears when aircraft flights from inquiry station) using radar screen, and comparison of this distance against minimal tolerance range of recognition distance according technical characteristics. In addition power potential of earth inquiry station is decreased by , where D₁ is minimal tolerance range of recognition distance for height H₁ of direct sight, H₂ is test height, R is Earth radius. Detected recognition distance is compared to minimal tolerance range of recognition distance according to equation . EFFECT: increased functional capabilities. 2 dwg