A mm-wave collision warning device for helicopters
Abstract
Using the frequency slot of maximum atmospheric attenuation around 60 GHz a short range collision warning device for helicopters was developed. The system consists of a pulsed radar sensor using semiconductors exclusively, a fast scanning mechanism and a display. First measurements show that high voltage transmission lines with diameters of about 20 mm can be detected at a distance of more than 400 m.
- Publication:
-
In AGARD Propagation Aspects of Frequency Sharing
- Pub Date:
- March 1983
- Bibcode:
- 1983pafs.agar.....R
- Keywords:
-
- Collisions;
- Devices;
- Frequency Assignment;
- Helicopters;
- Millimeter Waves;
- Pulse Radar;
- Radio Transmission;
- Warning;
- Atmospheric Attenuation;
- Radio Attenuation;
- Semiconductors (Materials);
- Warning Systems;
- Wave Propagation;
- Communications and Radar