Broadband signal measuring method and system

The invention discloses a broadband signal measurement method and system, and relates to the technical field of broadband signal measurement, discrete signals are collected, and then the discrete signals corresponding to sampling nodes are processed by adopting a four-order five-term Nuttall window interpolation method and an FFT algorithm, so that the problem of spectrum leakage can be solved, the analysis precision of the signals is improved, and the measurement accuracy of the broadband signals is improved. In addition, the problem of spectrum leakage caused by non-integer period truncation of acquired data due to power grid frequency fluctuation can be solved, finally, data anomaly judgment is carried out by adopting a decision tree algorithm, the communication transmission pressure is further reduced, and the requirement of a power system for real-time performance is met. 本发明公开了一种宽频信号测量方法及系统，涉及宽频信号测量技术领域，通过采集离散信号，然后采用四阶五项Nuttall窗插值法以及FFT算法对采样节点对应的离散信号进行处理，能够解决频谱泄露的问题，提升信号的分析精度，还能够处理因电网频率波动导致的采集数据非整数周期截断导