Parameter Estimation of the Resonant Model in Passive and Active Radar Systems by using Third-Order Statistics

The method based on third-order statistics (TOS) for the estimation of exponentially damped harmonic signal parameters in presence of additive Gausian band-limited noise is presented. Contrary to the conventional approaches using date samples or correlation functions samples, the TOS method takes the advantages of cumulants and can improve the poles parameters estimation. The theory and numeral simulation results are given to demonstrate the performance of the TOS method, the increasing accuracy of complex poles estimation and the redaction of the noise threshold that can provide the range extension of active and passive radar systems.