We analyze the pattern function of DBF in subarray under the ideal condition and with channel mismatch, and give the pattern functions of sum and difference beam. We correct the reception channel mismatch by using the channel equalization method. 本文分析了子阵DBF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。
The roof of the exhibition center is a cable tensioned box steel shape beam structure, and the roof of the reception hall and the conference center are I shape steel beam structures. 展览大厅的屋面为弧形大跨度拉索焊接箱型钢梁结构,接待厅和会议中心的屋面为工字型钢梁结构。