Title :
AVNA-based polarimetric scatterometers
Author :
Ulaby, Fawwaz T. ; Whitt, Michael W. ; Sarabandi, Kamal
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The polarization synthesis technique for measuring the scattering properties of point and distributed targets is discussed, and it is pointed out that accurate measurements of both the magnitude and phase of the scattered signal are now possible by using the signal-processing and error-correction techniques of the automatic vector network analyzer (AVNA). The principles of operation of the AVNA are given, and an overview of AVNA-based scatterometer configurations in use today at centimeter and millimeter wavelengths is provided.<>
Keywords :
electromagnetic wave polarisation; electromagnetic wave scattering; microwave measurement; network analysers; polarimetry; radar cross-sections; RCS; automatic vector network analyzer; cm wavelengths; distributed targets; microwave measurement; millimeter wavelengths; point targets; polarimetric scatterometers; polarization synthesis technique; Millimeter wave measurements; Polarization; Radar antennas; Radar cross section; Radar measurements; Radar polarimetry; Radar scattering; Radio frequency; Signal analysis; Surface waves;
Journal_Title :
Antennas and Propagation Magazine, IEEE
