球面圆环栅云纹测斜研究

Research on Skew Measurement of Moiré Fringes of Sphere Circular Gratings

提出利用两球面圆环栅干涉产生的 Moiré条纹 (即云纹法 )来计算和判别倾斜角和方位角的测斜新方法 ,设计了以球型传感器为主要器件的测斜系统 ,采用计算机图像处理技术 ,倾斜角及方位角的检测精度大大提高 ,达 30″以下 .

A new method of skew measurement was put forward, in which the Moiré fringes formed by the interference of two sphere circular gratings were used to calculate and discriminate slanted angle and azimuth angle. The dipcompass system was designed based on a sphere shaped sensor. The images were processed by using digital image technique. The precision of measuring slanted angle as well as azimuth angle was improved greatly, with the error being less than 30″. The method can be used in directional drilling and high accuracy horizontal survey.