Patent ID: 8594602
Filing Date: 2013-11-26
Classification: H01Q,H04B

Abstract:
1. A method for correcting for an angle of rotation between a linearly polarized target signal in a target signal environment and a dual-polarized linearly polarized receive antenna having a vertical output and a horizontal output, the method comprising: receiving simultaneously a time series of digitally sampled signals from a vertical output of the receive antenna (Xv(n)) and a time series of digitally sampled signals from the horizontal output of the antenna (Xh(n)); applying the Xv(n) signals simultaneously to a data buffer and to a spectrum domain converter block to yield, respectively, Xv(n) buffered signals and Xv(k) complex spectrum signals; applying the Xh(n) signal simultaneously to a data buffer and to a spectrum domain converter block to yield, respectively, Xh(n) buffered signals and Xh(k) complex spectrum signals; detecting the angle of rotation, θ, of the target signal with respect to the receive antenna; applying the detected angle of rotation, θ, and the Xv(k) and Xh(k) signals to a polarization rotation correction block to obtain polarization corrected frequency data Yv(k) and Yh(k); and applying the detected angle of rotation, θ, and the Xv(n) and Xh(n) signals to a polarization rotation correction block to obtain polarization corrected time data Yv(n) and Yh(n).