TY - GEN
T1 - Wide-field imaging design and image restoration with optical sparse-aperture system
AU - Wang, Dayong
AU - Chang, Jun
AU - Liu, Hancheng
AU - Guo, Hongfeng
AU - Tao, Shiquan
PY - 2006
Y1 - 2006
N2 - An optical configuration design is presented for the ground testbed. The system includes three sub-telescopes as the collecting elements, and a combination telescope. The goal is to produce an image with a "quality" equivalent to a filled monolithic aperture. The system has a diffraction limited field-of-view of 0.1 degrees. The subsystem utilizes non-spherical primary and secondary mirrors. Also, several image restoration techniques are analyzed in details, which are applied to sparse-aperture imaging system in frequency domain. The performances of the restoration techniques are compared under different circumstances, such as the aperture configurations, the fill factors, and the level of noise. The correlation coefficient is proposed as a criterion to determine optimal parameter, and evaluate the performance of algorithms. Simulation results demonstrate its possibility. Some suggestions are given for better restoration resolution of sparse-aperture imaging system.
AB - An optical configuration design is presented for the ground testbed. The system includes three sub-telescopes as the collecting elements, and a combination telescope. The goal is to produce an image with a "quality" equivalent to a filled monolithic aperture. The system has a diffraction limited field-of-view of 0.1 degrees. The subsystem utilizes non-spherical primary and secondary mirrors. Also, several image restoration techniques are analyzed in details, which are applied to sparse-aperture imaging system in frequency domain. The performances of the restoration techniques are compared under different circumstances, such as the aperture configurations, the fill factors, and the level of noise. The correlation coefficient is proposed as a criterion to determine optimal parameter, and evaluate the performance of algorithms. Simulation results demonstrate its possibility. Some suggestions are given for better restoration resolution of sparse-aperture imaging system.
KW - Aperture synthesis imaging
KW - Field-of-view
KW - High resolution imaging
KW - Optical interferometry
KW - Space optics
UR - http://www.scopus.com/inward/record.url?scp=33646392748&partnerID=8YFLogxK
U2 - 10.1117/12.674347
DO - 10.1117/12.674347
M3 - Conference contribution
AN - SCOPUS:33646392748
SN - 0819461881
SN - 9780819461889
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of SPIE - The International Society for Optical Engineering
T2 - 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies
Y2 - 2 November 2005 through 5 November 2005
ER -
