Doppler properties of radars in circular orbits
Abstract
Simply expressed equations with virtually no approximations that are based on angles that are satellite-referenced are presented for orbiting Doppler radar frequency shift and bandwidth, zero Doppler offset angle in spacecraft yaw and, in the SAR mode, the rate of Doppler frequency modulation, azimuth time-bandwidth product, resolution, available integration time, and location of principal azimuth ambiguities. Both earth rotation and the geosynchronous cases are included; the results obtained accordingly differ from expressions in the literature which have been derived on the basis of flat earth approximations.
- Publication:
-
International Journal of Remote Sensing
- Pub Date:
- September 1986
- DOI:
- 10.1080/01431168608948916
- Bibcode:
- 1986IJRS....7.1153R
- Keywords:
-
- Circular Orbits;
- Doppler Radar;
- Space Based Radar;
- Spacecraft Orbits;
- Bandwidth;
- Frequency Modulation;
- Synthetic Aperture Radar;
- Vector Analysis;
- Yaw;
- Space Communications, Spacecraft Communications, Command and Tracking