文中用逼近法和双线性变换法，设计了用于圆度测量的高斯数字逼近滤波器，并给出了零相移的递归滤波算法，计算量小，计算效率高，易于实现。
A series of Gaussian digital approximation filters used in roundness measurement were designed on the basis of approximation method and bilinear transformation.
仿真结果表明，CMA阵列的抗多径干扰性能受随机相移、信号幅度、信号空间分布等因素的影响。当所需信号与多径干扰信号空间隔离度越大，CMA阵列的抗多径干扰性能越好。
The results of simulations show that the random phase shift, the amplitude and DOA(Direction of Arrival) of signals can influence performance of CMA array in reducing multipath interference.
如果选择适当的方位角，相移对准直的灵敏度将有所改进。
If the azimuth Angle is selected properly, the sensitivity of phase...
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