Myron H. Greenbaum - South Orange NJ
Eugene R. Schineller - Glen Rock NJ
ITT Manufacturing Enterprises, Inc. - Wilmington DE
Apparatus and methods for measuring the polarization of a received signal. The horizontal and vertical signal components of the incoming signal are coupled to a plurality of channels operating in parallel, each channel having predetermined phase shift values and combining the phase-shifted components so as to produce output signals. One or more parameters of the output signals from each channel are supplied to a processor which determines values of the phase shifts which would yield a null condition, and thereby estimates the polarization of the received signal.