Study of Earth observation by frequency scanning. Volume 2
Abstract
The potential of frequency scanning for reducing the demand of microwave remote sensing instruments on the resources of the spacecraft in scatterometry and imaging radiometry was investigated. Applied to a single channel passive microwave radiometer, frequency scanning offers saving in mass and avoids a single point failure mode by eliminating the scanning mechanism. However, the wide swath requirement precludes higher microwave frequencies due to the high wrap-up factors that result in high losses. A multifrequency capability can only be achieved by using an antenna structure dedicated to each channel. A frequency sensitive pushbroom system with the potential to offer a better radiometric sensitivity may be superior for applications which require a single frequency and long integration time.
- Publication:
-
Final Report Dornier-Werke G.m.b.H
- Pub Date:
- November 1984
- Bibcode:
- 1984dwgf.rept.....M
- Keywords:
-
- Earth Observations (From Space);
- Frequency Scanning;
- Microwave Frequencies;
- Technology Assessment;
- Antenna Design;
- Microwave Radiometers;
- Scatterometers;
- Fluid Mechanics and Heat Transfer