Optimal receive polarization under the interference environment

For optimal polarization receiving in the presence of signal and noise, A SINR (signal-interference-and-noise-ratio) equation based on the pol-ratio parameters is derived from two triangles in polarization sphere. In addition, the local optimal solutions of SINR on the great circle tracks and the circle tracks are obtained, and the comparison between the local optimal solutions, the global optimal solutions and the matched polarization is given. Experiments results show that the local optimal solutions can improve the SINR in the interference case, and by adjusting the pol-ratio parameters on the tracks, the global optimal SINR can be achieved. This method turns 2D searching for the global optimal solution of the equation into one-dimensional.