NIAOT OpenIR  > 中国科学院南京天文光学技术研究所  > 期刊论文
Panel positioning error and support mechanism for a 30-m THz radio telescope
De-Hua Yang; Daniel Okoh; Guo-Hua Zhou; Ai-Hua Li; Guo-Ping Li; Jing-Quan Cheng
2011-06
Source PublicationResearch in Astronomy and Astrophysics
Volume11Issue:6Pages:725–736
Abstract
A 30-m TeraHertz (THz) radio telescope is proposed to operate at 200μm with an active primary surface. This paper presents sensitivity analysis of active surface panel positioning errors with optical performance in terms of the Strehl ratio. Based on Ruze’s surface error theory and using a Monte Carlo simulation, the effects of six rigid panel positioning errors, such as piston, tip, tilt, radial, azimuthal and twist displacements, were directly derived. The optical performance of the telescope was then evaluated using the standard Strehl ratio. We graphically illustrated the various panel error effects by presenting simulations of complete ensembles of full reflector surface errors for the six different rigid panel positioning errors. Study of the panel error sensitivity analysis revealed that the piston error and tilt/tip errors are dominant while the other rigid errors are much less important. Furthermore, as indicated by the results, we conceived of an alternative Master-Slave Concept-based (MSC-based) active surface by implementating a special Series-Parallel Concept-based (SPC-based) hexapod as the active panel support mechanism. A new 30-m active reflector based on the two concepts was demonstrated to achieve correction for all the six rigid panel positioning errors in an economically feasible way.
KeywordTelescopes Data Analysis Statistical Miscellaneous
Subject Area射电望远镜 ; 天文技术与方法
WOS IDWOS:000291963900011
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/625
Collection中国科学院南京天文光学技术研究所_期刊论文
望远镜新技术研究室_期刊论文
Recommended Citation
GB/T 7714
De-Hua Yang,Daniel Okoh,Guo-Hua Zhou,et al. Panel positioning error and support mechanism for a 30-m THz radio telescope[J]. Research in Astronomy and Astrophysics,2011,11(6):725–736.
APA De-Hua Yang,Daniel Okoh,Guo-Hua Zhou,Ai-Hua Li,Guo-Ping Li,&Jing-Quan Cheng.(2011).Panel positioning error and support mechanism for a 30-m THz radio telescope.Research in Astronomy and Astrophysics,11(6),725–736.
MLA De-Hua Yang,et al."Panel positioning error and support mechanism for a 30-m THz radio telescope".Research in Astronomy and Astrophysics 11.6(2011):725–736.
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