6Nicolaescu I, Losif F D. Null steering arrays. In: TEL-SIKS 2001, 2001,2 : 679.
7Torres J A, Davis R M,Kramer J D R,et al. IEEE Trans Aerospace and Elect Sys, 2000,36(4):1167.
8Baseri R,Yu K B,Hussain M A. Testing adaptive jamming cancellation algorithms using a digital beamforming array.In: IEEE National Radar Conference, 1997. 314.
9Seijoon S,Sunghun J,Chungyong L. The projection matrix method for interference cancellation. In: VTC 2001.Spring, IEEE VTS 53rd. 2001,3:1563.