time-frequency analysis的意思|示意

A experiment system at the base of rotor test bed was built to study the rotor faults diagnosis using the new time-frequency analysis method, then studed several typical faults.

以模拟转子实验台为基础构建了实验系统，并进行了实验研究。

To suppress ionospheric clutter in the echo signal of high frequency surface wave radar (HFSWR), a method to suppress clutter based on time-frequency analysis and eigenvalue decomposition is proposed.

针对高频地波雷达回波信号中的电离层杂波，提出了利用时频分析与特征值分解抑制杂波的方法。

The catenary irregularity is researched from time-frequency analysis of the data detected based on existing research results of track irregularity and track spectrum.

在已有轨道不平顺和轨道谱研究成果的基础上，从接触网不平顺检测数据的时频分析方面对接触网不平顺进行了研究。

The time-frequency analysis method is widely applied to rolling bearing fault diagnosis due to it can simultaneously provide time and frequency domain information of a signal.

由于时频分析方法能同时提供振动信号的时域和频域信息，因而在滚动轴承故障诊断中应用最为广泛。

The non-stationary signal is widely distributed in the reality, such as audio, radar and sonar signals. Time-frequency analysis is an effective tool to process the non-stationary signals.

非平稳信号广泛存在于很多实际场合中，比如如语音、雷达和声纳中的线性调频信号，时频分析是处理非平稳信号的一个强有力的工具。

The processing result notes that the method of time frequency analysis may improve stability and liability of extracting Rayleigh wave velocity.

处理结果表明，应用时频分析方法可以提高瑞雷波速提取的稳定性和可靠性。