二维子阵级ADBF及方向图控制方法研究
doi: 10.3724/SP.J.1146.2006.01240
Study on the Two-Dimensional ADBF at Subarray Level and Pattern Control Method
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摘要: 该文研究二维子阵级ADBF方法。 提出了适用于平面相控阵的子阵级ADBF的信号模型。给出了由一维阵元级ADBF推广得到的常规的二维子阵级ADBF。 引入了基于子空间投影的二维子阵级ADBF方法，可在无干扰时得到理想的静态方向图， 从而解决了自适应与非自适应工作模式之间的转换问题；而在有干扰时可有效地对干扰进行抑制，与常规方法相比，明显改善了旁瓣电平。仿真结果证明了所提出方法的有效性。Abstract: The two-dimensional ADBF method at subarray level is studied. The signal model of ADBF at subarray level is presented which is suitable for plane phased array. The conventional two-dimensional ADBF at subarray level is given which is generalized by one-dimensional ADBF at element level. The two-dimensional ADBF at subarray level based on subspace projection is introduced, and the desired quiescent pattern can be achieved in the absence of jammer, so the conversion problem between adaptive and non-adaptive work modes is resolved, while in the presence of jammer, the jammer is suppressed effectively, and the sidelobe level is improved markedly compared with the conventional method. Simulation results indicate the validity of the introduced methods.
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