The direction of acoustic beam and angular width of main lobe can be changed by properly amplitude-weighting, decreasing the frequency of impulsive signal and adjusting the interval of array elements.
通过适当的幅度加权、降低激励信号的频率、调整阵元的间距等措施可以改变辐射声束的方向和辐射主瓣的角宽。
Theoretically, a column conformal array with small size and few elements to generate a shaped beam with low side lobe and main beam with fixed width and flat top is carried out.
理论上实现了用较少的天线单元，且与小直径圆柱面共形的阵列，激励产生副瓣电平较低、主瓣有一定的宽度且顶部较平坦的波束。
At the same time under the direction of Figure lobe half-power beam width of the main requirements to determine their unit number and unit spacing.
同时根据方向图主瓣半功率波束宽度要求确定其单元数和单元间距。
At the same time under the direction of Figure lobe half-power beam width of the main requirements to determine their unit number and unit spacing.
同时根据方向图主瓣半功率波束宽度要求确定其单元数和单元间距。
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