Moving target imaging based on sparse SIMO radar with multiple carrier frequencies

According to the basic principle of linear antenna array´s beam forming, an imaging method for moving target based on sparse array single input multiple output (SIMO) radar with multiple carrier frequencies is proposed in this paper. By launching large bandwidth signal, the target´s two-dimensional image of the same resolution can be obtained with fewer array elements. Combined with the thought of minimal redundant array in spatial spectrum estimation, the range of antenna´s working frequency is effectively narrowed by increasing just few elements. The validity of the method is verified by simulations.