Research on wideband signal processing fast algorithm of high speed moving target

According to the characteristics of underwater high-speed moving target, a single scale correlative processing fast algorithm using wideband Pros and Cons frequency modulation HFM signal was advanced. Based on the analysis on the algorithm´s parameters estimation deviation variance, a scale approaching iterative algorithm was brought forward. The computer simulation of the two algorithms was accomplished and parameters estimation deviation variance curves were calculated by Monte Carlo method. The simulated reflected signal of high-speed moving target was collected in lake test and the two algorithms were applied on the target detection and parameters estimation under the low SNR level. The results of simulation and lake test showed that the two algorithms could accomplish the underwater high-speed moving target echo detection and parameter estimation effectively and the scale approaching iterative algorithm has a higher parameters estimation precision.