对于单分量LFM信号的较低信噪比检测和参数估计,目前已有许多理论可以完成。而在极低信噪比的情况下,大多方法都不太理想,目前分数阶Fourier变换方法处理得比较好。而针对故障诊断中,双通道采集信息的情况,采用矢分数阶Fourier变换来处理,期望取得更好的效果。
Regarding single component LFM signal low signal -to -noise ratio examination and parameter estimation , at present had many theories to be possible to complete. But in extremely low signal -to -noise ratio situation, these methods not all too ideal, at present FRFT method processing quite good. To double channel gathering information in breakdown diagnosis, uses VFRFT to process, expected obtains a better effect.