华北地区夏季降水异常型态特征分析 关键词 夏季降水 异常型态 奇异谱分析 [gap=528]Key words Summer precipitation,Anomalous types,SSA
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高阶奇异谱分析 HSSA
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奇异谱分析是数字信号分析的一种新方法。
Singular spectrum analysis (SSA) is a novel way to analyze digital signals.
结合奇异谱分析技术,提出了一种改进的邻域选取方法。
An improved neighborhood selection method combing with the SSA (singular spectrum analysis) technique is proposed.
但用G P算法求关联维数存在抗干扰能力较差、可靠性不稳定、运算量巨大等缺点。先对相空间进行奇异谱分析,进而对原始相空间进行旋转,使其成为正交的等效空间,然后再使用G P算法。
But G-P algorithm which be used to calculate D2 have some shortages, such as being robust against noise, not stable, and needing a big operation.
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