摘要
由于在截止频率区域内稀疏孔径系统的调制传递函数比全孔径系统的调制传递函数有所下降,在调制传递函数出现零点时影响成像质量。综合孔径通过调节其结构形式可以获得比较理想的调制传递函数。通过光学综合孔径的成像原理,给出了光学综合孔径的光学传递函数。并对不同子孔径的光学综合孔径的光学传递函数进行比较。结果表明综合孔径的结构调节可以改变系统的光学传递函数,选择合适的综合孔径结构可以使系统的成像质量得到改善。
The modulation transfer function of synthetic aperture is lower than that of filled-aperture system within the cut-off frequency. The zero values of MTFs may be produced at frequencies, which affect the image quality. Configuration optimization of synthetic aperture can achieve a synthetic aperture configuration with more uniform MTF, the image elements of synthetic aperture is analyzed. And the MTF of synthetic aperture is gained. The MTF of the several configuration of synthetic aperture is comparison and the results show that configuration optimization of synthetic aperture systems can achieve a uniform MTF. When the appropriate configuration is choice, the image quality can be improved.
出处
《科学技术与工程》
2008年第7期1660-1664,共5页
Science Technology and Engineering
作者简介
陈粉宁（1982-），硕士，研究方向：光电检测和光学设计。
