Y. Rahmat-Samii, J.M. Kovitz and L.R. Amaro, “Normalized Plane Wave Spectra: Quantification of Measured Near-Field Distributions for the ISS-RapidScat using Measured Far-field Patterns,” in Proceedings of the IEEE Antenna and Propagation Society International Symposium, pp. 1702 – 1703, July 2015.