小波变换处理雷达回波宽带模型及其适用性

Processing of broadband model of radar echo by wavelet transform and its applicability

为消除窄带模型分析运动物体回波信号,必须满足该运动物体的速度远远小于发射信号速度的限制条件,利用多普勒原理,建立运动物体回波宽带模型.研究结果表明:通过对运动物体回波信号宽带模型作自小波变换可以快速获得运动物体的运动速度和发射波发射时运动物体距波源的距离. Matlab软件仿真显示此种方法消除了限制条件,并且在常见雷达信号波中应用是可行的.

To remove the restrictive condition of v(the speed of moving objects)being far less than c(the spread speed of emission signals),the analysis on the echo signals of the moving objects by the narrowband model must satisfy the restrictive condition.Using Doppler Principle,this paper presents the broadband model of the echo signals of moving objects.The results of research indicate that it can quickly get the speed of moving objects and the distance between the motional object and the wave source when the emission wave transmits by self wavelet transform of the wideband model of the echo signals of motional objects.The simulations by using Matlab software show that this method removes the restrictive condition,and it’s feasible on common radar signals.