Radar Propagation in the Arctic
The characteristics of radar propagation in the arctic ionosphere, such as amplitude, phase and angle scintillation, auroral clutter and auroral noise affecting VHF-UHF transmissions are of concern. For HF transmissions,the additional ionospheric phenomena of interest are, spread F, sporadic E, auro...
| Other Authors: | |
|---|---|
| Format: | Text |
| Language: | English |
| Published: |
1972
|
| Subjects: | |
| Online Access: | http://www.dtic.mil/docs/citations/AD0738791 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0738791 |
| Summary: | The characteristics of radar propagation in the arctic ionosphere, such as amplitude, phase and angle scintillation, auroral clutter and auroral noise affecting VHF-UHF transmissions are of concern. For HF transmissions,the additional ionospheric phenomena of interest are, spread F, sporadic E, auroral absorption, polar cap absorption, and traveling ionospheric disturbances. The current status of experimental and theoretical data on the propagation limitations of these effects in the frequency range from approximately 1 MHz to 10 GHz and the correlation of these effects with such phenomena as magnetic activity, optical aurora and particle precipitation were considered at the meeting. CW and pulse transmissions were treated for propagation paths traversing the arctic regions. Investigations of the arctic-ionospheric propagation characteristics utilizing rafio astronomical and satellite transmissions were particularly applicable to this meeting. (Author) NATO furnished. Presented at the Specialists Meeting of the Electromagnetic Wave Propagation Panel of AGARD Held at the Max-Planck-Institut fuer Aeronomie, Lindau/Harz (West Germany) on 13-17 Sep 1971 |
|---|