时差估计算法Basicaspectsoftimedelayestimation(TDE)basedonsampled,signalsareinvestigatedinthispaper.Thedirectcross-correlationmethodisanalyzedandcomparedtotheaveragesquaredifferencefunction(ASDF)andthe(additiononlybased)averagemagnitudedifferencefunction(AMDF)estimators.Theirrelativeaccuracyist