Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. A Modified MinimumCoherence Sampling for Fast Spherical NearField Measurements
 13th European Conference on Antennas and Propagation, EuCAP 2019 Piscataway, NJ: IEEE, 2019 ISBN: 9788890701887 ISBN: 9781538681275 Art. 8739317 
 European Conference on Antennas and Propagation (EUCAP) <13, 2019, Krakow> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer FHR () 
Abstract
A modified compressed sampling based on minimal mutual coherence for spherical nearfield measurements is proposed. After defining the sampling points for minimal coherence, more sampling points along the positioner mechanical path are added following the principles of equiangular sampling. Since the number or length of positioner movements is not increased, the measurement speed stays the same while the acquired information is increased. Exploiting the sparsity of the Spherical Mode Coefficients (SMC), the SMC vector is reconstructed using compressedsensing techniques. This scheme is applied to measured data. Using the SMC calculated from a measurement using equiangular sampling, the data at the given sampling points is calculated. From these data, the SMC are reconstructed using basis pursuit. The reconstruction error is evaluated for schemes with a different number of sampling points. It is shown that the proposed sampling strategy allows for faster measurements for a given error level.