Error analysis techniques for planar near-field measurements

Rcs Prediction from Planar Near-field Measurements

It is well-known that, at low frequency, far-field RCS can be measured using a suitable implementation such as outdoor range or large anechoic chamber. The aim of this paper is to propose a new algorithm to predict RCS from near-field measurements. The comparison between RCS values obtained from the proposed method and those obtained from direct far-field values shows a good agreement between t...

Probe-Position Error Correction in Planar Near Field Measurements at 60 GHz: Experimental Verification

This study was conducted to verify that the probe-position error correction can be successfully applied to real data obtained on a planar near-field range where probe position errors are known. Since probe position-error correction is most important at high frequencies, measurements were made at 60 GHz. Six planar scans at z positions separated by 0.03 A were obtained. The correction technique ...

Planar Near-Field Antenna Measurements Using Nonideal Measurement Locations¤

— The standard planar near-…eld to far-…eld transformation method requires data points on a planerectangular lattice. In this paper we introduce a transformation algorithm in which measurements are neither required to lie on a regular grid nor are strictly con…ned to a plane. Computational complexity is O (N logN), where N is number of data points. (Actual calculation times depend on the numeri...

Truncation-error Reduction in 2d Cylindrical/spherical Near-field Measurements

Cylindrical Near-Field Measurements

A full characterization of the far-field noise obtained from cylindrical nearto far-field transformation, for a white Gaussian, space stationary, near-field noise is derived. A possible source for such noise is the receiver additive noise. The noise characterization is done by obtaining the autocorrelation of the far-field noise, which is shown to be easily computed during the transformation pr...