一种基于离散Wigner-Ville分布的目标加速度提取方法

A Method of Extracting Target Acceleration by UsingDiscrete Wigner-Ville Distribution

提出了一种在低脉冲重复频率（ＰＲＦ）和对目标采样数有限情况下提取加速度信息的方法。用这种离散时频分析方法同时也能获得目标的速度信息（多普勒频率）。离散Ｗｉｇｎｅｒ－Ｖｉｌｅ分布用快速傅里叶变换（ＦＦＴ）来实现，因而计算量小，易于工程实现。计算机模拟结果证明了这样提取加速度信息是完全可行的。

This paper presents a method extracting target acceleration by using discrete Wigner-Ville distribution under low pulse repetition frequency (PRF) and a finite number of samples, velocity information (Doppler frequency) of target can be obtained simultaneously by using the time-frequency analysis method. Discrete Wigner-Ville distribution (DWVD) is applicated with Fast Fourier Transform(FFT), thus the demand is small and easy to application. The result of computer simulation has proved the realizability of this extracting acceleration information method.