A Study on Precession-period Extraction Method of Ballistic Targets
Rujiang Guo · Modern Radar · 2010
A ballistic targets echo model is established in this paper.The traditional methods such as CAUTOC,CAMDF and variance analysis method are compared according to the echo model,and their characteristics are analyzed.Then an eigenvalue-entropy based variance analysis method is presented.This algorithm obtains the eigenvalue entropy using the eigenvalue decomposition of echo series,and the amplitude period is estimated by the variance analysis method.The presented approach can effectively maintain the precision o f the typical variance analysis method as well as decrease the error rate.This method is robust even in the low SNR condition.Finally,simulations are operated to evaluate this approach with variant SNRs.The amalysis shows that this approach has a strong anti-noise ability.