Invariance of mean-square effective area of synthesized apertures
Abstract
Aperture synthesis on the basis of field coherent functions is considered from the standpoint of correlational field processing by additive antennas. Departures of such apertures from the law of mean-effective-area conservation make it necessary to establish another law of conservation make it necessary to establish another law of conservation viable for energy parameters. This is done, considering that the mean effective area remain invariant, inasmuch as the radiation power pattern represents the radiation field-intensity pattern squared. Accordingly, an analog of the original law of conservation is constructed which takes into account quasi-periodicity as well as invariance in space. It pertains to the mean-sqaure effective area instead, which is shown to be constant over the entire field of vision and elates the maximum effective area of a synthesized aperture to the radiation power pattern of the antenna. Design and performance calculations based on this parameter as invariant yield other energy parameters also in mean-square terms.
- Publication:
-
USSR Rept Electron Elec Eng JPRS UEE
- Pub Date:
- September 1984
- Bibcode:
- 1984RpEEE....Q..13D
- Keywords:
-
- Antenna Components;
- Antenna Radiation Patterns;
- Electromagnetic Fields;
- Synthetic Apertures;
- Antenna Design;
- Coherence Coefficient;
- Conservation Laws;
- Communications and Radar