Abstract: Algorithms called TJE-FastICA and DS-FastICA were proposed to filter out deception jamming in fuze. First, the channels were extended by making use of the noncircularity and the characteristic of the signals in different circles, and the original FastICA was improved to suppress noise. Then, TJE-FastICA was proposed by eliminating transitional interference using the statistical characteristics of amplitude of the cycling-related outputs, DS-FastICA was proposed by using two BSS systems to separate two sets of signals. Simulation results show that the proposed algorithms are superior to algorithms of orthogonal projection and direct BSS, DS-FastICA is superior to TJE-FastICA with 2.5 dB, and when R_SN>7.5 dB, the similarity of the separated echo in the two algorithms are greater than 80%, and the separation time of DS-FastICA is nearly 91% faster than TJE-FastICA.