Design of foundation multi-aperture imaging system validation experiment
-
摘要:基于工程实践中高分辨率目标成像技术的需求,讨论了光学合成孔径成像技术的成像原理以及在提高成像分辨率方面的优越性,阐述了国内外在相关领域取得的科研成果及存在的技术难点。在现有加工工艺及装调检测条件下,设计了基于两个子望远镜的合成孔径成像实验。以斐索型多孔径望远镜为研究对象,从几何光学理论出发,讨论了地基斐索型合成孔径成像系统实验的可行性。分析实验中关键组件的调整精度,提出了合成孔径成像系统精确成像的方案。实验中设计了分辨率<0.03 mm的微调机构来保证系统获得清晰的像,并使用分辨率达到0.05 m的压电直线精密驱动器来保证两束光相位同步。分析结果表明,本文设计的地基多孔径成像系统实验切实可行,可得到合成孔径成像系统分辨率的确切值,为进一步研究合成孔径成像系统奠定了基础。Abstract:On the basis of the demands of high resolution in imaging technologies of developing engineering practices, the imaging principles of an optical synthetic aperture and the advantages in improving the resolution of image was discussed in this paper. The domestic and foreign research results and the exciting technical difficulties in the relevant research fields also were demonstrated. In the current conditions of processing and testing alignment, the imaging experiment of two sub-aperture telescope was designed. From theory of geometrical optics, using Fizeau-type multi-aperture telescope, the experimental possibility of Fizeau-type synthetic aperture was investigated. The adjustment accuracy of the key components in the synthetic imaging system was researched, which ensures that the system can make an image completely. In the experiments, the fine tuning mechanism with a designed resolution less than 0.03 mm ensures that the system can obtain a clear image, and the precision piezoelectric linear drive system with a resolution 0.05 m guarantees the synchronization of two beams' phases. The results show that the foundation of the designed experiment is feasible, and the system can offer the exact resolution values. This research makes a useful basis for the synthetic aperture imaging system, and has important potential in practices.
-
[1] 郁道银.工程光学[M]. 2版.北京:机械工业出版社,2006. YU D Y.Engineering Optics[M]. 2nd ed. Beijing:Machinery Industry Press,2006.(in Chinese) [2] 乔彦峰,刘坤,段相永. 光学合成孔径成像系统发展概况[J]. 中国光学与应用光学 ,2009,2(3):1-9. QIAO Y F,LIU K,DUAN X Y. The development of optical synthetic aperture imaging system overview[J].Chinese J. Opt. and Appl. Opt.,2009,2(3):1-9.(in Chinese) [3] MATTEW P,MAJEED M H. Estimation of vibration spectra including vibrating direction with synthetic aperture radar[J].SPIE,2010,7699:76990L. [4] NI M S,IRWIN J W.Optical synthetic aperture imaging with spatial heterodyne interferometry[J].SPIE,2009,7468:74680Q. [5] 王海涛,周必方. 光学综合孔径干涉成像技术[J]. 光学 精密工程 ,2002,10(5):434-437. WANG H T,ZHOU B F. Interference optical synthetic aperture imaging technique[J].Opt. Precision Eng.,2002,10(5):434-437.(in Chinese) [6] GIESEN P,OUWERKERK B,van BRUGA H,et al.. Mechanical setup for optical aperture synthesis for wide field imaging[J].SPIE,2009,5528:361-371. [7] 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):1009-1011. LONG W J,WANG ZH L,ZHOU Y P. Optical aperture synthesis telescope image analysis and computer simulation[J].Acta Opt. Sinica,2004,24(8):1009-1011.(in Chinese) [8] 刘欣悦,董磊,王建立. 稀疏采样傅里叶望远镜成像[J]. 光学 精密工程 ,2010,18(3):521-527. LIU X Y,DONG L,WANG J L. Sparse sampling Fourier imaging telescope[J].Opt. Precision Eng.,2010,18(3):521-527.(in Chinese) [9] 明名,王建立,张景旭. 大口径望远镜光学系统的误差分配与分析[J]. 光学 精密工程 ,2009,17(1):104-108. MING M,WANG J L,ZHANG J X. Large aperture telescope optical system and analysis of error distribution[J].Opt. Precision Eng.,2009,17(1):104-108.(in Chinese) [10] 陈晓丽,沈洪兵,杨秉新,等. 稀疏孔径成像系统发展概况[J]. 航天返回与遥感 ,2006,27(1):23-27. CHEN X L,SHEN H B,YANG B X,et al.. Overview of the development of sparse aperture imaging system[J].Spacecraft and Remote Sensing,2006,27(1):23-27.(in Chinese) [11] 陈欣杨.斐索型天文光学综合孔径望远镜的若干关键技术研究 . 上海:中国科学院上海天文台 ,2006. CHEN X Y. Fizeau-type optical aperture synthesis telescope astronomical number of key technologies .Shanghai:Shanghai Astronomical Observatory,Chinese Academy of Sciences,2006.(in Chinese) [12] 季家镕.高等光学教程[M]. 北京:科学出版社,2007. JI J R.Advanced Optics Tutorial[M]. Beijing:Science Press,2007.(in Chinese) [13] 吴泉英,钱霖,沈为民. 两种稀疏孔径系统的成像研究[J]. 光学 精密工程 ,2006,14(1):26-33. WU Q Y,QIAN L,SHEN W M. Studying about two sparse-aperture imaging system[J].Opt. Precision Eng.,2006,14(1):26-33.(in Chinese) [14] MEINEL A B. Aperture synthesis using independent telescopes[J].Appl. Opt.,1970,9(11):2501-2504. [15] 王治乐,张伟. 斐索型光学合成孔径系统近轴成像条件研究[J]. 应用光学 ,2004,25(5):3-6. WANG ZH L,ZHANG W. Fizeau optical synthetic aperture imaging system, conditions of near-axis[J].Appl. Opt.,2004,25(5):3-6.(in Chinese) [16] 刘建芳,杨志刚,范尊强,等. 压电直线精密驱动器研究[J]. 光学 精密工程 ,2005,13(1):65-72. LIU J F,YANG ZH G,FAN Z Q,et al.. Piezoelectric linear precision actuator[J].Opt. Precision Eng.,2005,13(1):65-72.(in Chinese)
点击查看大图
计量
- 文章访问数:3709
- HTML全文浏览量:372
- PDF下载量:1867
- 被引次数:0