Wei-Qian Hao, Zhong-Cheng Liang, Xiao-Yao Liu, Rui Zhao, Mei-Mei Kong, Jian-Fei Guan, Yue Zhang. Imaging performance of fractal structuresparse aperture arrays [J]. Acta Physica Sinica, 2019, 68(19): 199501-1
- Acta Physica Sinica
- Vol. 68, Issue 19, 199501-1 (2019)
Fig. 1. Fractal array configuration.分形阵列结构
Fig. 2. Configuration characteristics: (a) Sub-aperture diameter and fill factor curve; (b) the relationship of the number of fractal configuration and the radius of aperture.结构特征 (a)子孔径直径与填充因子曲线图; (b)结构层数与包围圆半径关系
Fig. 3. MTF of fractal array (F = 22.46%): (a) There-dimensional MTF; (b) top-view MTF.
分形阵列MTF(F = 22.46%) (a)三维MTF; (b) MTF俯视图
Fig. 4. MTF curves of fractal array with different fill factor: (a) Normalized frequency along fx - axis; (b) normalized frequency along fy - axis.
分形结构随填充因子变化MTF曲线 (a)沿fx 归一化频率方向; (b)沿fy 归一化频率方向
Fig. 5. MTF curves of fractal array with different outer layer rotational angles: (a) Normalized frequency along fx - axis; (b) normalized frequency along fy - axis.
分形阵列随外环旋转角度变化MTF曲线 (a)沿fx 归一化频率方向; (b)沿fy 归一化频率方向
Fig. 6. The curve of the practical frequency with outer layer rotational angles.实际截止频率随外层旋转角的变化曲线
Fig. 7. N = 3, N = 9 array configuration.
N = 3, N = 9阵列结构
Fig. 8. MTF curves of three kinds of array configuration (F = 22.46%): (a) Normalized frequency along fx - axis; (b) normalized frequency along f y - axis.
3种阵列的MTF曲线(F = 22.46%) (a)沿fx 归一化频率方向; (b)沿fy 归一化频率方向
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Table 1.
Characteristics of fractal array with different fill factors.
分形阵列在不同填充因子下的特性指标
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Table 2.
Characteristics of three kinds of array configuration.
3种阵列的特性指数
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