Propagation and scattering considerations for the 0.2-3.0 GHz frequency range for a space-based radar
Abstract
A survey is made of major phenomena of the lower atmosphere and ionosphere which would introduce clutter and affect propagation in the 0.2-3.0 GHz frequency range in a space-based, ground-looking radar. Attenuation, refractive effects, and weather-related phenomena are included in the study. It is found that the major trade-off that must be made in the frequency range is the relative immunity of the low frequencies to weather related phenomena versus the relative immunity of the high frequencies to deleterious ionospheric effects.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1984
- Bibcode:
- 1984STIN...8517282B
- Keywords:
-
- Atmospheric Attenuation;
- Frequency Ranges;
- Ionospheric Propagation;
- Radar Equipment;
- Wave Propagation;
- Weather;
- Atmospheric Refraction;
- Earth Ionosphere;
- Electromagnetic Radiation;
- Fading;
- High Frequencies;
- Immunity;
- Low Altitude;
- Low Frequencies;
- Radiation Absorption;
- Refraction;
- Scintillation;
- Communications and Radar