W SCR Apparatus Selecting Polarized Wave for SCR Improvement in W-Band Millimeter Wave Seeker and Method thereof

摘要

The present invention relates to an apparatus to select a polarized wave and a method thereof. More specifically, the present invention relates to an apparatus to select a polarized wave, which varies the polarized wave angle in consideration of power of a receiving clutter within a polarized wave scope adjacent to a pre-saved polarized wave angle and distinguishes a target from a clutter signal. According to the present invention, the apparatus to select a polarized wave comprises: a first clutter processing unit to radiate a first polarized wave signal of a first polarized wave angle to detect a target at a pre-saved radiation angle and to perform a Fourier transform of a first reception signal, which is received as the radiated first polarized wave signal is reflected, thereby calculating the size of the first clutter signal reflected in a clutter; a second clutter processing unit to radiate second polarized wave signals at a polarized wave angle adjacent to a pre-saved second polarized wave angle in accordance with the radiation angle and to perform a Fourier transform of second reception signals received as the radiated second polarized wave signals are reflected, thereby calculating the size of second clutter signals reflected in the clutter; and a polarized wave selection unit to compare the calculated sizes of the first clutter signal and second clutter signals and to select a polarized wave direction of a target signal to detect the target.