improved proximity warning indicator (pwi) of the radar-transponder 'listen-in' type, which incorporates several new features intended to reduce unnecessary warnings and to facilitate threat evaluation, is undergoing flight tests. one new feature is a direction-finding capability that automatically shows the approx. bearing of other aircraft whose transponder signals are being received, another is means of filtering out transponder replies from aircraft that are at much higher or lower altitude and therefore pose no immediate threat.
bendix flight-tests a 'listen-in' pwi (bendix testet flugannaeherungswarngeraet)
Aviation Week and Space Technology ; 97 , 13 ; 90-93
1972
, 3 Bilder
Aufsatz (Zeitschrift)
Englisch
Engineering Index Backfile | 1939
Engineering Index Backfile | 1938
Engineering Index Backfile | 1938
Engineering Index Backfile | 1959