The results of digital pulse compression for Broadband LFM signals are influenced by the change of sampling rate especially when the sampling rate cannot be very high. 宽带LFM(线性调频)信号数字脉压中,当采样率不能取得足够高时,在不同的采样率下脉压输出结果将发生变化。
A new digital filtering method combining sliding mean filter and the peak pulse interference filter was proposed to filter the sampling value of RF label. 为此提出了将滑动均值滤波和尖峰脉冲干扰滤波相结合的数字滤波方法,对标签的采样值进行滤波处理。
To the problem that the values change while using digital way to measure and display amplitude of long-period pulse in some instruments, this paper presents one way to resolve it by using delayed electronic circuit and avoiding useless point of pulse in sampling. 针对某仪器中使用数字方法测量和显示长周期脉冲电压幅值时出现的测量值变化问题,利用延时电子线路和回避采样脉冲的方法对其进行改进。
Apply DSP-based direct digital signal ( DDS ) synthesizing technology, synthesize a standard signal source that carries synchronized pulse measured in second with GPS. The PUM calibration device is a combination of power magnification, output loop, sampling, digital PID and computer-on-module. 采用基于DSP的直接数字频率(DDS)合成技术,合成与GPS秒脉冲同步的标准信号源,将功率放大、输出回路、采样、数字PID和嵌入式计算机一起组成了PUM的检定装置。