摘要
功率谱估计能给出被分析对象的能量随频率的分布情况,是信号处理中一个重要分支。参数模型法将信号看成是一个随机输入序列通过一个线性系统的输出,通过建立模型来估计信号的功率谱,有明显的物理意义,已经成为现代谱估计的重要方法,在对设备进行故障诊断中起了重要的作用。
Power spectrum estimation is an important branch of signal processing which can show energy of the object analyzed changing with frequency distribution. Parametric model method treats the signals as the outputs of a linear system with a random sequence input, and establishes the model to estimate the signal power spectrum which has obvious physical meaning. It becomes an important method of modem spectral estimation, and plays an important role on diagnosing the working failures of the equipments.
出处
《传感器世界》
2012年第2期25-29,共5页
Sensor World
关键词
功率谱
参数模型法
信号处理
MATLAB
power spectrum, parameter model method, signalprocessing, MatLab
