把用脉冲反射法得到的动目标信号进行分离、以消除固定反射的技术,在雷达、声纳、超声波诊断、防犯及异常物体检测设备中得到广泛应用。这种技术的基本方法是把过去的周期信号或其平均值存储起来,求出与现时信号的差。用这种方法可以检测正在移动中的目标。但是,如果目标停止移动,信号立即消失,因 The moving target signal obtained by pulse reflection method is separated to eliminate the technique of fixed reflection and is widely used in radar, sonar, ultrasonic diagnosis, anti-crime and abnormal object detection equipment. The basic method of this technique is to store past periodic signals or their averages and find the difference from the current signal. This method can detect the moving target. However, if the target stops moving, the signal disappears immediately