We analyze the patternfunction of DBF in subarray under the ideal condition and with channel mismatch, and give the pattern functions of sum and difference beam.
本文分析了子阵d BF在理想通道条件及通道失配情况下的方向性函数，给出了其和差波束方向性函数特性。
2
This paper analyses the patternfunction of DBF in subarray. The designing method for directivity pattern is given and the condition of producing the grating lobe is discussed.
详细分析了由子阵构成的DBF的方向性函数特性，给出了方向图的设计方法，并讨论了其栅瓣产生的条件。
3
The groove patternfunction was employed to express the curvature and groove space of aberration reducing gratings, and the dispersive system containing a single grating was discussed.