弱小飞机目标检测，利用双边滤波器，将局部包含飞机目标的背景进行平滑处理，再利用获得的残差图像，得到飞机所处的具体方位。-Small aircraft target detection, the use of bilateral filter, the partial target aircraft contains background smoothing treatment, reuse residual image obtained to give the specific location in which the airplane.