Abstract:

This paper presents an adaptive cancellation method to counter the digital radio frequency memory (DRFM)repeat false target in a dynamic situation. With a special reference signal, the echo and the false target signal can be fully separated by applying the stretch processing. Thus, an adaptive notch filtering technique is utilized to estimate the jamming signal, and a cancellation approach is performed to suppress the false target component. This approach does not require parameter estimation of multi-component signals and the computation burden is reduced. Simulations are given to show the effectiveness of the approach.