1. A time domain signal analysis method, comprising: receiving a signal to be analyzed; iteratively sifting the signal to be analyzed by using empirical mode decomposition (EMD) to extract at least one intrinsic mode function (IMF); performing a normalized Hilbert transform on the at least one IMF, wherein the transformed at least one IMF comprises phase information; processing the transformed at least one IMF by means of phase processing to obtain the at least one IMF comprising angular frequency information; and comparing the processed at least one IMF to a two-dimensional image related to the signal to be analyzed to identify image information of the two-dimensional image, wherein the image information of the two-dimensional image comprises a position, a size and a moving speed of a moving object.