A comparative evaluation of holographic and machine methods of measuring the spatial structure of wave fields
Abstract
Two techniques of measuring wave front spatial structures are found to provide satisfactory results within a confidence level of 1.5-2 dB. Both methods - the holographic method (Kliuchnikov and Sidorovich, 1976) and the computer method, which calculates the amplitude-phase distribution of the directivity diagram - are described. The holographic method permits measurement of the spatial structure of the microwave field in the dynamic range of up to 20-25 dB when an electronic device is used and of up to 10 dB when a LCD is used. The computer method provides a range of up to 25-30 dB.
- Publication:
-
Akademiia Nauk BSSR Doklady
- Pub Date:
- December 1977
- Bibcode:
- 1977DoBel..21.1090K
- Keywords:
-
- Antenna Radiation Patterns;
- Computer Techniques;
- Holography;
- Microwave Antennas;
- Wave Fronts;
- Amplitudes;
- Far Fields;
- Horn Antennas;
- Liquid Crystals;
- Instrumentation and Photography