Research On Uwb Radio Fuze Filtering Technology Based On Adaptive LMS Algorithm

The modern war requires that the fuze can achieve the correct extraction of the target signal in harsh electromagnetic fields,and UWB radio fuze echo signal is susceptible to high frequency noise interference.At present,the research on fuze echo signal is mainly focused on two aspects: System anti-jamming technique and Analysis of echo technology to develop the corresponding suppression technology.Although achieved remarkable results,these two aspects have many issues,such as technical complexity and cost higher et al.As the adaptive LMS algorithm is simple and easy to achieve,and in the absence of a priori statistical characteristics of the signal and noise,filter parameters can be automatically adjusted by its own algorithm to achieve the best filtering effect,so,the paper proposes to use adaptive LMS algorithm to deal with UWB radio fuze echo signal.Based on the analysis of the original adaptive LMS algorithm,according to the principle of variable step size LMS adaptive algorithm,and combined with the theory of mathematics and control engineering theory,two new nonlinear function models on step and error was created by introducing a feedback control function,which made the corresponding steps at different times mutual influence and improved the practicability of the algorithm.The paper mainly complete two parts: the first part is to use MATLAB to study the convergence and steady-state performance of the proposed algorithm model,and determines the key parameters in the algorithm model with faster convergence rate and lower steady-state error,and performs performance comparison analysis compared with the algorithm of the existing literature;The second part is to use the established algorithm for UWB radio fuze echo signal filtering analysis.Firstly,the optimal model of the best filter performance of two algorithmswere determined,and then the influence of different signal-to-noise ratio on fuze echo signal was analyzed,and finally,the fuze echo signals with different signal-to-noise ratio were simulated and analyed respectively,and the length of the optimal filter was determined.The simulation results show that the algorithm proposed in the paper achieves the ideal filtering requirement in the processing of UWB radio fuze echo signal.