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For a little over a decade now, a measurement and post-processing technique named Mathematical Absorber Reflection Suppression (MARS) has been used successfully to identify and then suppress range multi-path effects in spherical [1, 2, 3, 4], cylindrical [5, 6, 7] & planar [8, 9] near-field antenna measurement systems and far-field [10] and compact antenna test ranges [11] with a detailed theoretical...
The efficiency of use of the parabolic reflector of a single offset reflector compact antenna test range (CATR) is affected largely by the illumination provided by the range feed and the reflector edge treatment. Thus, when these factors are taken together it is commonly found that the realized quiet zone (QZ) diameter is typically as little as 30% of the diameter of the reflector for the commonly...
This paper presents the results of a recent study concerning the computational electromagnetic simulation of a spherical near-field (SNF) antenna test system in the presence of a compact antenna test range (CATR). The plane-wave scattering matrix approach [1, 2] allows many of the commonly encountered components within the range uncertainty budget, including range reflections, to be included within...
The efficiency of use of the parabolic reflector of a single offset reflector compact antenna test range (CATR) is affected largely by the illumination provided by the range feed and the reflector edge treatment. Thus, when these factors are taken together it is commonly found that the realized quiet zone (QZ) diameter is typically as little as 30% of the diameter of the reflector for the commonly...
This paper presents the results of a recent computational electromagnetic (CEM) simulation campaign for a single offset reflector CATR, where a number of models employing different field propagation methods were compared and contrasted both qualitatively and quantitatively using objective, non-local statistical image classification techniques.
Recent work in developing a mode orthogonalisation and filtering post processing algorithm for multipath suppression in far-field and planar near-field antenna measurement systems has enabled worthwhile improvements to be obtained from the analogous, but mathematically and computationally distinct, cylindrical analogue. This paper presents an overview of the measurement and novel post-processing algorithm...
Nearly all antenna measurements are contaminated to some degree with fields scattered by objects within the environment of the test system. In many instances these reflections (i.e. multi-path) are found to constitute one of the most significant contributors to the facility-level error budget. For some time, a frequency domain measurement and post-processing technique named Mathematical Absorber Reflection...
Attempts to produce robust, objective, quantitative measures of similarity between antenna pattern data sets using statistical methods have been widely reported in the open literature. This paper presents an introduction to the physical validity and use of generalised statistical analysis along with specialist statistical image classification concepts as applied to the assessment of antenna pattern...
Reflections in antenna test ranges can often constitute the largest single term within the error budget of a given facility. For some time, a frequency domain measurement and postprocessing technique named Mathematical Absorber Reflection Suppression (MARS) has been successfully used to reduce range multi-path effects within spherical near-field and far-field antenna measurement systems. More recently,...
In many instances, reflections within antenna test ranges constitute the largest single component within the facility-level error budget [1]. For some time, a frequency domain measurement and post-processing technique named Mathematical Absorber Reflection Suppression (MARS) has been successfully used to reduce range multi-path effects within spherical near-field and far-field antenna measurement...
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