Using a frequency near the atmospheric attenuation maximum of 60 GHz a short range collision warning device for helicopters has been developed. The system consists of a pulsed radar sensor using semiconductors exclusively, a fast scanning mechanism and a display. First measurements showed that high voltage transmission lines having diameters of about 20 mm could be detected at a distance of more than 400 m.
A 60 GHz collision warning sensor for helicopters
Ein 60 GHz-Sensor fuer Zusammenstosswarnungen von Hubschraubern
Conf. proc. military microwaves '82 ; 344-351
1982
8 Seiten, 11 Bilder, 8 Quellen
Aufsatz (Konferenz)
Englisch
HUBSCHRAUBER , SICHERHEIT , BORDGERAET , MILLIMETERWELLE , MESSSENDER , MESSEMPFAENGER , ABTASTANTENNE , RADAR , SENSOR , IMPULSBETRIEB , DISPLAY , INTERFERENZ , ENTFERNUNGSMESSUNG , HOEHENMESSUNG , UNFALLVERHUETUNG , MIKROWELLENANTENNE , FLUGSICHERUNG , REFLEKTIERTE WELLE , OSZILLOGRAMM , AUFLOESUNGSVERMOEGEN
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