光学学报, 2009, 29 (10): 2774, 网络出版: 2009-10-19  

稀疏孔径双圆周阵列的成像性能研究

Imaging Quality of Double-Circle Sparse Aperture Array Configuration
作者单位
北京航空航天大学 电子信息工程学院,北京 100191
摘要
针对传统稀疏孔径均匀圆周阵列的调制传递函数在截止频率区域内易出现零值而影响成像质量的问题,提出一种由两个均匀圆周阵列嵌套构成的无冗余的双圆周稀疏孔径结构。给出该阵列的光瞳函数以及调制传递函数的解析表达式。以5-3结构的双圆周阵列为例,以实际空间截止频率为像质评价准则,从子孔径直径、内环圆周半径以及内环旋转角度等几个方面详细分析了双圆周阵列的成像特性,给出不同情况下的实际截止频率值,并对双圆周阵列稀疏孔径系统进行模拟成像和图像复原。将该结构与均匀圆周阵列,Cornwell优化圆周阵列进行比较。结果表明,相同条件下,该阵列具有更大的实际空间截止频率,并且成像质量随着填充因子的减小而逐渐下降。
Abstract
A new non-redundant double-circle sparse aperture array configuration,which is composed of two uniform circle arrays,is proposed,since the modulation transfer function (MTF) of the common uniform circle array usually has zero-value regions within the cut-off spatial frequency,which prejudice the image quality. The pupil function and MTF have been given. Taking the five-three double circles array as an example,image performance is discussed in terms of the sub-aperture diameter,inner circle radius and inner circle rotation,based on the practical cut-off frequency. Imaging simulation and image restoration are given. The results show that,compared with the uniform circle array and Cornwell′s optimized circle array,the double circle array has higher practical cut-off frequency,and the image quality degrades with the decrease of filling factor.
参考文献

[1] 龙伟军,王治乐,周彦平. 光学综合孔径望远镜成像分析及计算机仿真[J]. 光学学报,2004,24(8):1009-1014

    Long Weijun,Wang Zhile,Zhou Yanping. Imaging analysis computer simulation of optical synthetic aperture telescope[J]. Acta Optica Sinica,2004,24(8):1009-1014

[2] A. B. Meinel. Aperture synthesis using independent telescopes[J]. Appl. Opt.,1970,9(11):2501-2504

[3] J. E. Harvey,R. A. Rockwell. Performance characteristics of phased array and thinned aperture optical telescopes[J]. Opt. Eng.,1988,27(9):762-768

[4] R. D. Fiete,J. A. Mooney,T. A. Tantalo et al.. Image quality assessment of sparse-aperture designs with decreasing fill factors[C]. SPIE,2000,4091:64-73

[5] R. D. Fiete,T. A. Tantalo,J. R. Calus et al.. Image quality of sparse-aperture designs for remote sensing[J]. Opt. Eng.,2002,41(8):1957-1969

[6] 王治乐,张伟,龙夫年. 衍射受限光学合成孔径成像系统像质评价[J]. 光学学报,2005,25(1):35-39

    Wang Zhile,Zhang Wei,Long Funian. Image quality evaluation for diffraction-limited optical synthetic aperture system[J]. Acta Optica Sinica,2005,25(1):35-39

[7] R. Barakat. Dilute aperture diffraction imagery and object reconstruction[J]. Opt. Eng.,1990,29(2):131-139

[8] Wen Jianguo,Jin Shengzhen,Ning Shunian. Optimum linear array of an optical aperture synthesis telescope[J]. Chinese Science Bulletin,2002,47(23):1964-1968

[9] 江月松. 直线阵光学综合孔径成像中的子孔径尺寸效应[J]. 光学学报,2005,25(8):1042-1047

    Jiang Yuesong. Size effects of sub-aperture on imaging of linear array of optical synthetic aperture[J]. Acta Optica Sinica,2005,25(8):1042-1047

[10] 何云涛,江月松,陈海亭. 二维圆周综合孔径阵列优化及其毫米波成像特性研究[J]. 遥感学报,2007,11(1):33-38

    He Yuntao,Jiang yuesong,Chen haiting. Studies of optimization and imaging properties of two-dimensional circle array for mm-wave synthetic aperture system[J]. J. Remote Sensing,2007,11(1):33-38

[11] 何云涛,江月松,刘广达. 基于遗传算法的光综合孔径圆周阵优化[J]. 光学学报,2007,27(9):1611-1616

    He Yuntao,Jiang Yuesong,Liu guangda. Optical synthesis aperture circle-array optimization based on genetic algorithm[J]. Acta Optica Sinica,2007,27(9):1611-1616

[12] T. J. Cornwell. A novel principle for optimization of the instantaneous Fourier plane coverage of correlation arrays[J]. IEEE Transactions on Antennas and Propagation,1988,36(8):1165-1167

[13] J. L. Flores,G. Paez,M. Strojnik. Design of a diluted aperture by use of the practical cutoff frequency[J]. Appl. Opt.,1999,38(28):6010-6018

[14] L. M. Mugnier,G. Rousset,F. Cassaing. Aperture configuration optimality criterion for phased arrays of optical telescope[J]. J. Opt. Soc. Am. A,13(12):2367-2374

[15] Wang Dayong,Han Ji,Fu Xiyang. Imaging of optical sparse aperture systems and its evaluation experimentally[C]. SPIE,2007,6721:672105-1-9

[16] 吴泉英,钱霖,沈为民. 复合三子镜稀疏孔径光瞳结构的研究[J]. 光学学报,2006,26(2):187-192

    Wu Quanying,Qian Liu,Shen Weimin. Research on pupil configuration of dual three sub-apertures sparse aperture system[J]. Acta Optica Sinica,2006,26(2):187-192

刘丽, 江月松, 王长伟. 稀疏孔径双圆周阵列的成像性能研究[J]. 光学学报, 2009, 29(10): 2774. Liu Li, Jiang Yuesong, Wang Changwei. Imaging Quality of Double-Circle Sparse Aperture Array Configuration[J]. Acta Optica Sinica, 2009, 29(10): 2774.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!