| MLFMA应用于舰船RCS计算中迭代残差的选择 |
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| 引用本文： | 方重华,宋东安,谭辉,张崎,杨张帆.MLFMA应用于舰船RCS计算中迭代残差的选择[J].舰船科学技术,2010,32(9). |
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| 作者姓名： | 方重华 宋东安 谭辉 张崎 杨张帆 |
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| 作者单位： | 电磁兼容性国防科技重点实验室,中国舰船研究设计中心,湖北武汉430064 |
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| 摘 要： | 针对舰船RCS,提出了对多层快速多极子算法(MLFMA)应用于工程实践的改进措施。本文的研究思路与以往的研究者有所不同,另辟蹊径选择了迭代残差作为实践研究的突破口,探索出适合于工程实践的算法运用结论。通过对多个迭代残差值的比较,选择出使计算结果精度基本不变而迭代次数减少的迭代残差值,从而直接提高了计算收敛速度。数值计算结果表明,对于某型舰艇模型来说,0.01是比较合适的值。同时,这一方法对舰船类大型目标的电磁计算也有指导意义和工程实用价值。
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| 关 键 词： | 舰船 迭代残差 |
The selection of iterative residual of MLFMA about application of calculation of ship's RCS |
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| FANG Chong-hua,SONG Dong-an,TAN Hui,ZHANG Qi,YANG Zhang-fan.The selection of iterative residual of MLFMA about application of calculation of ship's RCS[J].Ship Science and Technology,2010,32(9). |
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| Authors: | FANG Chong-hua SONG Dong-an TAN Hui ZHANG Qi YANG Zhang-fan |
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| Institution: | FANG Chong-hua,SONG Dong-an,TAN Hui,ZHANG Qi,YANG Zhang-fan(National Key Laboratory of Science and Technology on EMC,China Ship Development and Design Center,Wuhan 430064,China) |
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| Abstract: | The improvement of multilevel fast multipole algorithm(MLFMA)is presented for ship's RCS.It mainly increase computation speed by the selection of iterative residual.By means of the compare of more iterative residuals,the optimized value can be selected under the circumstance that the computation results are stable and the iterative times is deduced.As a results,the iterative convergent speed is improved.The numerical results have shown 0.01 is the appropriate numerical value for a certain ship model.What's ... |
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| Keywords: | MLFMA RCS |
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