Parameter estimation of QFM signal based on MPKF

In order to reconstruct the quadratic frequency modulated (QFM) signal, such as radar signal due to the complexity. A novel method for the parameter estimation of multi-component QFM signal based on a modified product kernel function (MPKF) is proposed in this paper. The method has fewer external cross-terms and light computational burden because of non-iterative operations. Moreover, it is robust against additive noise. Finally, simulated and real data results confirm the proposed method.