摘要
地物背景杂波因其存在多普勒频移导致频谱展宽,目标与杂波频域位置相差小,从而增加了对低速目标检测的难度。通过与经典傅里叶频域法相比较,引出了小波变换法在低速目标检测中的作用。最后应用MATLAB给出仿真的结果,证明了小波变换在低速目标检测中的优越性。
Since there is a Doppler frequency shift exists in ground object background clutter, the spectrum is spread, the frequency domain difference between the target and the clutter is small so as to increase difficulty to detect the low -velocity targets. Comparing with the classical Fourier frequency domain approach, the action of the wavelet transform in detection of low-velocity target is introduced. Finally, the simulated results are given by using MATLAB, this demonstrates the advantage of wavelet transform in detection of the low-velocity target.
出处
《火控雷达技术》
2009年第4期45-48,共4页
Fire Control Radar Technology
关键词
低速目标
经典傅里叶频域法
小波变换
low-velocity target
classical fourier frequency domain approach
wavelet transform
