在地 关 键 词 分形; 分维; 最小二乘法; 多重分形 [gap=834]Key words fractal; fractal dimension; least square method; multi-fractals
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multi fractal 多重分形
multi fractal model 多分形模型
multi-fractal dimension 多重分形维数
multi fractal spectrums 多重分形谱
multi-fractal identification 多重分形辨识
In the process of feature extraction, image transformation and wavelet decomposition are combined and a feature set based on multi-fractal dimension is assembled.
在特征提取上，运用图像变换和小波分解的思想，对各种图像变换结果进行估计，得到了基于多重分形维数的特征集。
参考来源 - 基于图像内容的水下目标识别技术研究These features are extracted based on phase-space reconstruction and correlation integration theory. With the multi-fractal spectra features and RBF classifier, the modulation recognition is completed with more accurate result.
使用基于相空间重构和关联积分的方法提取信号多重分形谱特征,采用RBF网络分类器进行调制识别,提高了已有识别方法的准确率;(6)阐明了跳频序列的预测是调制识别在扩频通信中的一个应用。
参考来源 - 数字通信信号调制识别若干新问题研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The space-time distribution of earthquakes is usually multi-fractal Set.
地震时空分布通常是多重分形集。
Then, Hurst analysis was used to analyze multi-fractal characteristics of different scale signals.
研究发现，分解的信号可由多尺度方法得到较好的理解。
Geophysical data are the stack of these kinds of signals and thus present multi-fractal characteristics.
地球物理信号通常表现为多个这类信号的叠加，为多维分形特征。
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