The algorithms based on BSS and orthogonal projection were proposed to solve the problem of deception jamming suppression under near-field sources. First, the orthogonal projection matrix was constructed using the first peak position after the received signals' matched filtering for the PN fuze, so the deception jamming can be filtered out using orthogonal projection algorithm; and for the LFM fuze, the jamming was separated using BSS to construct orthogonal projection matrix according to their independence, so the echo was received using the same principle. Simulation results show that the proposed algorithms have good performance, the similarity of separated jamming is greater than 92% when the repeated cycle is smaller than 5 µs, and the jamming can be eliminated when the similarity is greater than 82%.