基于小波分析的脉冲探测与幅度捕获方法

Pulse detecting and amplitude capturing method based on wavelet analysis

基于高斯脉冲成形,讨论了辐射探测信号的幅度测量方法。在脉冲探测算法中,除传统的阈值(Threshold)判别外,最小脉冲宽度(Min Width)和最大有效脉冲宽度(Max Width)判别标准的存在,降低了有效脉冲误判和漏判的概率。利用高斯成形滤波器的线性相位特征,直接在快滤波器探测到的脉冲到达时间点tpeak上捕获慢滤波器的输出,就可以得到脉冲幅度的测量值,简化了幅度捕获过程。

The digital algorithms based on the GSF for measuring energy spectroscopy have been described. In the algorithms for pulse detection,besides traditional threshold,the minimum width MinWidth and the maximum width Max Width are used at the same time,which reduce the probability of mistaking for or missing out the valid radiation pulses. Making use of the linear phase characteristic of the GSF,a measurement of the peak amplitude of a pulse is simply obtained by capturing the value of the pulse amplitude at the output of slow filter channel at the pulse＇s arrival time tpeakwhich has been made sure in fast filter channel based on the pulse detection algorithms,which simplifies the procedure of capturing peak amplitude of a pulse.