Power transfer from natural emitters to collection apertures at microwave wavelengths
Abstract
The power transfer criteria necessary and sufficient to produce a detection of the emitting object by the collecting aperture and its receiver are shown. Range equations show the transfer of microwave energy from a passive, diffuse, emitting object that is located on a planetary surface, to a collecting aperture that is carried on an aerial platform or spacecraft. The mathematical relationships show in closed form the expressions for signal to noise ratio as a function of certain key parameters. The practical case of an emitting object on the Earth and a collecting aperture in orbit is presented.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1984
- Bibcode:
- 1984STIN...8515989S
- Keywords:
-
- Accumulators;
- Apertures;
- Emitters;
- Energy Transfer;
- Microwave Antennas;
- Microwave Emission;
- Remote Sensing;
- Spacecraft Equipment;
- Clutter;
- Mathematical Models;
- Sidelobes;
- Signal To Noise Ratios;
- Terrestrial Radiation;
- Electronics and Electrical Engineering