An Efficient Approach for Estimating the Data External to the Measurement Region in Helicoidal Scanning
Authors: F.D'Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, G. Riccio, C. Rizzo
An effective approach for the estimation of the data external to the near-field measurement region in the helicoidal scan is developed in this work. It is based on the nonredundant sampling representations of the electromagnetic field and uses the singular value decomposition method for extrapolating the outside samples. It is so possible to reduce the inevitable truncation error affecting the near-field reconstruction, due to the finite dimension of the helix. Numerical examples assess the effectiveness of the proposed technique.