Title :
Effect of random errors in cylindrical near field measurements
Author :
Romeu, J. ; Jofre, L.
Author_Institution :
Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
Expressions have been derived previously to predict the effect of random errors in planar near-field measurements. Similar equations for cylindrical near-field measurements are not available. Random errors are due to A/D (analog-to-digital) quantization, receiver noise or random room scattering; their nature is additive and will limit the accuracy of the far-field pattern. Since the near-to-far-field transformation is a linear operator the effect of additive noise can be analyzed by superposition. The near-field noise is assumed to be complex Gaussian noise, space stationary, with zero mean, and variance sigma /sup 2/. In the present analysis, the statistical characteristics of the far-field noise are found. Numerical simulations have been carried out to validate the expressions obtained.<>
Keywords :
antenna radiation patterns; electric field measurement; magnetic field measurement; measurement errors; random noise; additive noise; analog to digital quantization; complex Gaussian noise; cylindrical near field measurements; far-field pattern; linear operator; near-field noise; near-to-far-field transformation; numerical simulations; planar near-field measurements; random errors; random room scattering; receiver noise; space stationary; statistical characteristics; superposition; variance; zero mean; Additive noise; Additive white noise; Autocorrelation; Colored noise; Discrete Fourier transforms; Equations; Gaussian noise; Polarization; Random variables; White noise;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175123
