Methodological accuracy and noise error of
antenna pattern retrieval through measurements in non-ideal conditions,
being presented by convergent cluster of plane waves
Yu. I. Choni 1, I. Yu. Danilov 2
1 Kazan
National Research Technical University named after A.N. Tupolev-KAI
2J SC
Academician M.F. Reshetnev Information Satellite Systems
The paper is received on
December 12, 2015
Abstract.
The paper discusses methodological aspects, computing peculiarities and technical
factors with regard to their impact on the accuracy of antenna pattern
retrieval through the data, measured in non-ideal environments. We mean any
circumstances giving rise to differences between the field in the working area
and the ideal plane wave in the first place, a rather short distance from the
illuminating antenna. The pattern retrieval procedure is based on the
illuminating field reconstruction in the form of a converging cluster of plane
waves. It is obtained by processing the data from the probe that is moved along
the boundary surface of the working area. With regard to the two-dimensional
scalar tasks we investigate the stability of a pattern retrieval problem,
potential accuracy and the influence the of measurement errors. In cases
cylindrical or spherical illuminating wave, the resultant fields of converging
cluster of plane waves inside and outside the working area are demonstrated. The
evaluation of the achievable retrieval accuracy is presented.
Key words:
antenna radiation pattern, converging cluster of plane waves, antenna
measurement accuracy, reconstruction algorithm, stability, precision.