基于小波变换的提高激光引信测距精度研究

Study on improving ranging precision of laser fuze based on wavelet transform

为了满足激光引信精密测距的技术要求,通过建立目标回波信号的数学模型,利用Matlab对传统测距算法中的前沿鉴别法、恒定比值鉴别法和峰值检测法进行仿真,在研究的基础上提出了一种基于小波变换模极大值的测距方法。通过误差仿真分析,对比了四种算法的优缺点,结果表明小波变换法的效果明显优于传统算法,可将测距误差控制在厘米量级。

To meet the technical requirements of the laser fuze precision ranging, a mathematical model of the target echo signal is established ,and Matlab is used to simulate the forefront identification, constant ratio identification and peak detection in the traditional ranging algorithm. Based on these studies, A method of ranging based on modulus maxima of wavelet transform is proposed. Through the error simulation analysis, the advantages and disadvantages of the four algorithms are compared. The results show that wavelet transform method is obviously better than the traditional algorithm, and the range error can be controlled in centimeter order.