The catch is that because low-frequency waves can travel great distances, when they do bounce off cavities or objects underground, they often end up far from the detection equipment at the surface.
捕捉过程是这样的,因为低频波可以传输到更远的距离,当它们遇到地下的空穴或其他物体反射回来的时候,已经距地面的接收装置很远了。
The simulation result shows that the dynamic response and the detection precision in detection circuit can be greatly influenced by the cut-off frequency, order and type of low pass filter.
结果表明,低通滤波器的截止频率、阶数和类型对检测电路的动态响应过程、检测精度都有很大影响。
The detection probability calculating method about low pulse repetition frequency(LPRF) PD radar against air vehicle is studied.
提出了低脉冲重复频率(LPRF)PD雷达探测飞行器目标的发现概率计算方法。
应用推荐