LI Ying-xiang, XIAO Xian-ci. A New Kind of Time-Frequency Representation for Multi-LFM Signals[J]. Acta Electronica Sinica, 2002, 30(12): 1879-1881.DOI:
A method for multi-LFM signals time-frequency representation is proposed.Firstly
we use the Radon-Ambiguity transform to get the linear kernel function
which can remove the cross terms of multi-LFM signals and some part of noise in the ambiguity domain.Then we use the two-dimensional Fourier transform to get the new time frequency representation.The validity of removing noise and cross terms of this method has been shown by computer simulation even in low signal to noise ratio condition.