Simple estimation of late-time response for radar target identification

This paper proposes a conceptual technique for the simple estimation of the late-time response for radar target identification without a priori knowledge of the target geometry or orientation. In the proposed technique, the cross correlation between the backscattering response and transmitted wave is performed. Peaks will occur in the cross-correlation output when the transmitted wave is aligned with the same features in the received backscattering response. The commencement of the late-time response corresponds with the peak resulting from a superimposed pattern between the transmitted wave and late-time response. The matrix pencil method was exploited in order to extract the poles from the received backscattering response. Several simulations were performed to evaluate the performance of the proposed estimation technique. The simulation results confirmed the superiority of the proposed approach. In the special case of the transmission with a monocycle pulse, the commencement of the late-time response can be automatically selected from the third peak of the resulting cross-correlation output.