光电工程
光電工程
광전공정
OPTO-ELECTRONIC ENGINEERING
2014年
12期
78-81,94
,共5页
安其昌%张景旭%杨飞%刘祥意
安其昌%張景旭%楊飛%劉祥意
안기창%장경욱%양비%류상의
三十米望远镜三镜%斜率均方根%频域特征%低阶像差
三十米望遠鏡三鏡%斜率均方根%頻域特徵%低階像差
삼십미망원경삼경%사솔균방근%빈역특정%저계상차
TMT M3%slope RMS%frequency domain feature%low order aberration
为了更好地评价30 m望远镜三镜(TMT M3)的反射镜,本文结合系统频域特征以及斜率均方根,对于其检测、评价的基本原理进行研究。首先根据斜率均方根(slope RMS)的定义,基于正弦多项式,对于其基本性质进行推导与分析;然后,针对斜率测量,提出slope RMS的分离与合成方法,为提出符合TMT招标方要求的检测评价方法提供理论基础;最后,将本文方法应用于TMT三镜仿真数据,检验了本文假设的正确性与方法的可行性。
為瞭更好地評價30 m望遠鏡三鏡(TMT M3)的反射鏡,本文結閤繫統頻域特徵以及斜率均方根,對于其檢測、評價的基本原理進行研究。首先根據斜率均方根(slope RMS)的定義,基于正絃多項式,對于其基本性質進行推導與分析;然後,針對斜率測量,提齣slope RMS的分離與閤成方法,為提齣符閤TMT招標方要求的檢測評價方法提供理論基礎;最後,將本文方法應用于TMT三鏡倣真數據,檢驗瞭本文假設的正確性與方法的可行性。
위료경호지평개30 m망원경삼경(TMT M3)적반사경,본문결합계통빈역특정이급사솔균방근,대우기검측、평개적기본원리진행연구。수선근거사솔균방근(slope RMS)적정의,기우정현다항식,대우기기본성질진행추도여분석;연후,침대사솔측량,제출slope RMS적분리여합성방법,위제출부합TMT초표방요구적검측평개방법제공이론기출;최후,장본문방법응용우TMT삼경방진수거,검험료본문가설적정학성여방법적가행성。
We investigate a new metric slope Root Mean Square (RMS) for characterizing the performance and for large telescope such as TMT tertiary mirror. The metric can multiply the errors which derived from the low order aberration, such as Zernike polynomials and other frequency composition. It represents the efficiency lose due to mid and high-spatial frequency components in frequency domain. The metric also properly counts for the optic error of the mirror itself such as the deviations from a perfect surface and metrology measurement errors .We also numerically confirm this feature for the TMT M3. We hope the work of this paper will be useful for the metrology of TMT.