Automatic Astronomical Survey Method Based on Video Measurement Robot

Abstract

Utilizing charge-coupled device (CCD) imaging technology in astronomical surveying and positioning facilitates high-precision measurements without manual observation. This eliminates the influence of the traditional celestial geodetic personal and instrumental equation, and further improves measurement efficiency and automation. This paper proposes a CCD astronomical measurement method based on a Leica video georobot platform and a polynomial transformation method based on circle readings to achieve rapid and accurate conversion between circle and pixel coordinate differences. The RMS error (RMSE) of the horizontal and vertical transformations is better than 0.7′′ and 0.6′′, respectively. The results of initial astronomical field observation experiments indicate that the average internal precision in the longitudinal and latitudinal directions is better than 0.015 s and 0.20″, respectively, and the RMSE of external accuracy is better than 0.02 s and 0.30″, respectively, which proves that the proposed method is reliable and accurate when conducting first-class astronomical surveys. Furthermore, the proposed method reduces workflow and field operation times and facilitates miniaturization and automation, and makes high-precision astronomical field measurements rapid and intelligent.