关键词: 来波方向估计, Householder干扰阻塞法, 预白化处理, 微弱信号

Abstract: When Direction of Arrival（DOA） of strong interference is known or can be accurately estimated, one-dimensional weak signals’ DOA is usually estimated by using jamming jam method. But when employ two-dimensional array, blocking matrix such as cascade of sparse matrices is not stable as the change of array geometry. The output signal of blocking matrix require pre-whitening process, which lead to the increasing complexity. Jamming jam method based on Householder transformation is presented, the method can both suppress strong interference and obtain the DOA of weak signals. The form of this blocking matrix is stable since it doesn’t changed along with the array geometry. Moreover, the output signal doesn’t require pre-whitening process, the method has the characteristics of low complexity and more accuracy.

Key words: Direction of Arrival（DOA） estimation, Householder Jamming Jam Method（JJM）, pre-whitening process, weak signal