Study Of Optimum Polarization Character Of The Target In Rain Clutter

The purpose of this paper is to improve the received signal and SCR (the ratio of signal to clutter) by study of the polarization character of the target in rain clutter and finding the optimum polarization states of the antennae. In this paper, all notions and prescripts are redefined based on the existed documents. In ohier to obtain the Mueller matrix in rain area, the back scattering character of one raindrop is studied, and the Mueller matrix is then obtained by means of statistics. The power of the reflected waves are classified according to the polarization states, and it is a matter of great significance. To enhance the reflected signal of the radar target, which is important in the field of radar target recognition, the three-step method and Lagrange factor method are used. It is also discussed how to get the optimum polarimetric state of the antennae when the SCR is optimum. Although it could weaken the signal of the target in clutter, it is reasonable to radar target detection. It should be noted that in this paper the polarimetric states of receiving and transmitting antenna are same or cross which are not independent.