Abstract
During the non-landing measuring of vehicle mounted theodolite, especially under high-speed tracking measurement, the misalignment of theodolite’s center of mass and spindle etc. will cause high-frequency vibration of theodolite platform, increase the observation error of targets and even unbelievable results. In this paper, a correction method of non-landing measuring of theodolite based on static datum conversion is presented, which can effectively improve the observation accuracy of theodolite. The CCD camera is fixed to the theodolite platform to calculate the gesture shaking quantity of theodolite platform in geodetic coordinate system through the real time imaging of static datum. The observation results of theodolite are corrected by using such shaking quantity. The experiment shows that the correction accuracy exceeds 10 s of arc. The intrinsic parameter calibration technology of camera based on stellar angular distance and absolute conic put forward in this paper can prevent the estimated error of extrinsic parameters influencing the intrinsic parameter calibration and improve the intrinsic parameter calibration accuracy; the static datum conversion technology can reduce the influence of installation error of camera and theodolite platform on gesture measuring of the platform. The simulation experiment shows that when the shaking range of the platform is less than 30 min of arc, the influence of the three-axis installation error of camera within 3deg on the accuracy of correction results is less than 8 s of arc. The method in this paper can be extended to and used in the field of gesture shaking measuring and micro-structure deformation of various unstable platforms, therefore it is of important theoretical research significance and has wide engineering application prospect.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Wang T, Tang J, Song L W. Correction of the measuring error of vehicular photoelectric theodolite (in Chinese). Infrared Laser Eng, 2012, 5(41): 1335–1338
Jiang W W, Gao Y G, Feng D Y, et al. Corrected error of base-plane for vehicle-borne photoelectric theodolite (in Chinese). Acta Astronaut, 2009, 30(12): 1638–1641
Li Z, Wu Z Y, Tong G, et al. Pointing error correction for vehicular platform theodolite (in Chinese). Opt Prec Eng, 2010, 18(4): 921–927
Zhang Y Y. The research of vehicle plane distortion measuring and error emendation technology (in Chinese). Doctoral Dissertation. Beijing: Graduate University of Chinese Academy of Sciences, 2003
Tong G, Wang F. Analysis and correction for influence of vehicle platform deformation on measuring errors (in Chinese). Opt Prec Eng, 19(4): 775–781
Zhang D M, Shang C M, Qiao Y F. The research of deformation measurement technology of vehicle flat in photoelectric theodolite (in Chinese). Laser Infrared, 2005, 35(6): 435–437
Yu Q F, Sun X Y, Jiang G W, et al. Relay camera videometrics based conversion method for unstable platform to static reference. Sci China Tech Sci, 2011, 54: 1017–1023
Shang Y, Yu Q F, Zhang X H, et al. Analytical method for camera calibration from a single image with four coplanar control lines. Appl Opt, 2004, 43(28): 5364–5368
Zhang X H, Zhang Z, Li Y, et al. Robust camera pose estimation from unknown or known line correspondences. Appl Opt, 2012, 51(7): 936–948
Hartley R, Andrew Z Multiple View Geometry in Computer Vision. Hefei: Anhui University Press, 2002
Zhang Z. Research on measurement error correction of vehicle photoelectric theodolite working on the quasi-moving base (in Chinese). Dissertation for Masteral Degree. Changsha: National University of Defense Technology, 2007
Zhou J. Study on optical measurement techniques based on unstable and moving platforms in shooting range (in Chinese). Doctoral Dissertation. Changsha: National University of Defense Technology, 2012
Singer R A. Estimating optimal tracking filter performance for manned manervering targets. IEEE T Aerosp Electr Syst, 1970, 6(4): 473–483
Rufino G, Accardo D. Enhancement of the centroiding algorithm for star tracker measure refinement. Acta Astronaut, 2003, 52(2): 135–147
Liu H B, Wang J Q, Tan J C, et al. Autonomous on-orbit calibration of a star tracter camera. Opti Eng, 2011, 50(2): 023604
Wang Z, Xiao P F, Gu X F, et al. Uncertainty analysis of cross-calibration for HJ-1 CCD camera. Sci China Tech Sci, 2013, 56: 713–723
Yu Q F, Shang Y. Videometrics: Principles and Researches. Beijing: Science Press, 2009
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Liu, J., Zhang, X., Liu, H. et al. Correction method for non-landing measuring of vehicle-mounted theodolite based on static datum conversion. Sci. China Technol. Sci. 56, 2268–2277 (2013). https://doi.org/10.1007/s11431-013-5303-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11431-013-5303-5