| 高阶累积量计算优化的仿真研究 |
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| 引用本文： | 成静,李钢虎,周关林.高阶累积量计算优化的仿真研究[J].计算机仿真,2009,26(8):80-83. |
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| 作者姓名： | 成静 李钢虎 周关林 |
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| 作者单位： | 西北工业大学航海学院,陕西,西安,710072 |
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| 摘 要： | 高阶累积量由于计算量大而未得到广泛的应用,所以对其进行计算优化以及算法的简化能更好的发挥其优越性,根据推导的非平稳随机过程四阶累积量精确递推估计公式,从减少四阶累积量估计的计算量,增强四阶累积量的工程实用性出发,给出了四阶累积量近似递推估计定理.只要四阶累积鼍的更新因子满足定理的条件,就能减少计算量,并且使估计的四阶累积量保持抑制高斯噪声的性能,并且根据四阶累积量的优化给出了五阶累计量的优化和仿真.从时域和频域进行了优化仿真,仿真结果证实了估计的有效性.
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| 关 键 词： | 非平稳随机过程 四阶累积量 五阶累积量 递推估计 计算量 |
Simplified Calculating Simulation of Fourth-Order Cumulants |
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| CHENG Jing,LI Gang-hu,ZHOU Guan-lin.Simplified Calculating Simulation of Fourth-Order Cumulants[J].Computer Simulation,2009,26(8):80-83. |
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| Authors: | CHENG Jing LI Gang-hu ZHOU Guan-lin |
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| Affiliation: | College of Marine Engineering;Northwestern Polytechnical University;Xi'an Shanxi 710072;China |
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| Abstract: | As a mass of computing capacity,higher-order cumulant is not widely uesd.So it will better exert its superiority when computing is optimized and algorithm is simplified.According to the fourth-order cumulant precise recurrence estimated formula of nonstationary random process,the paper presents an approximate cumulative estimated theorem of fourth-order cumulant,which is derived from reducing estimating computing capacity of fourth-order cumulant and enhancing the practicality of fourth-order cumulant proje... |
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| Keywords: | Nonstationary random process Fourth-order cumulant Fifth-order cumulant Recursion estimate Computational complexity |
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