CAJ | 학술논문

在绝对距离测量中,由于大气扰动造成的测量路径上折射率分布不均匀对干涉测量有很大的影响,针对这一问题,本文提出了一种补偿大气折射率的多波长干涉测量绝对距离的方法.该方法基于小数重合法的基本原理,在测量过程中不需要对大气参数进行实时监测,而是通过A系数所给出的各波长折射率之间的关系解算距离.文中结合小数重合法的基本原理给出了理论推导与分析,并采用594.1 nm、611.9 nm、632.8 nm三种波长在计算机上进行了数值仿真实验,得到了该算法的小数级次测量精度与非模糊距离(UMR)的匹配关系.
재절대거리측량중,유우대기우동조성적측량로경상절사솔분포불균균대간섭측량유흔대적영향,침대저일문제,본문제출료일충보상대기절사솔적다파장간섭측량절대거리적방법.해방법기우소수중합법적기본원리,재측량과정중불수요대대기삼수진행실시감측,이시통과A계수소급출적각파장절사솔지간적관계해산거리.문중결합소수중합법적기본원리급출료이론추도여분석,병채용594.1 nm、611.9 nm、632.8 nm삼충파장재계산궤상진행료수치방진실험,득도료해산법적소수급차측량정도여비모호거리(UMR)적필배관계.
@@@@In absolute distance measurement, interferometric methods are severely affected by the uneven distribution of refractive index of air along the optical path with turbulence. To solve this problem, a multi-wavelength interferometric method for absolute distance measurement is presented, which can compensate for the refractive index of air in real time. Instead of monitoring the real-time environmental parameters, this method based on the excess fractions method can obtain the geometric length by using the relationship between the refractive index of different wavelengths provided by the A coefficient. A theoretical analysis based on the excess fractions method is presented, and a numerical simulation with 594.1 nm, 611.9 nm and 632.8 nm wavelengths is conducted on computer. The result shows the relationship between the Unambiguous Measurement Range (UMR) and the required fringe fraction resolution under this wavelength combination.