This paper, by examples, introduces the application of triple root in the calculation and proof of complex number, and exact division in multinomial.

本文通过几个例子介绍了三次单位根在复数计算、证明与多项式整除中的应用。

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The conventional spatial smoothing algorithm has low array aperture utilization and complex calculation process. And it's smoothing frequency is limited by the number of array sensors and sources.

常规的空间平滑算法存在着阵列孔径利用率低、计算过程复杂的缺点，另外，其平滑次数受阵元数及信源数的限制。

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It is shown that the improved algorithm provides more accurate calculation results than the complex Gaussian function expansion, so long as the number of Fourier series is no less than 30.

研究表明，只要傅里叶级数项数不少于30，改进后的算法比直接用复高斯函数展开具有更高的计算精度。

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