Influence of high noise on the instantaneous frequency estimationusing quadratic time-frequency distributions

摘要

Analysis of time frequency (TF) distributions, as theninstantaneous frequency (IF) estimators for low noise, has beennpreviously carried out. In this letter, we extend the analysis to highnnoise. This noise causes a specific error, which can dominate over allnother studied errors. The crucial parameter is the ratio of auto-termn(AT) magnitude and distribution standard deviation