对两幅图像低频波段的逼近系数取均值，对高频段选取绝对值大的小波包系数，得到融合系数矩阵。

Approximate coefficients in low frequency band of two images and the average over absolute wavelet packet coefficients of high frequency brand form a fused coefficients matrix.

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这种分析方法也适用于极低频到甚高频波段。

This analytic method is also suitable for the bands of extremely low frequency (ELF) and very high frequency (VHF).

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图2例示了多波段天线系统100，其表示在低频段中操作的多波段天线系统100中的导体元件102、104。

FIG. 2 illustrates the multi-band antenna system 100 showing the conductors elements 102, 104 in the multi-band antenna system 100 operating in a low frequency band.

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