Sensitivity analysis of orientation error of airborne laser autonomous positioning to gas pipeline

Based on the particular application background of the remote sensing detection of the buried natural gas pipeline leak by the airborne laser, the accurate positioning of the buried natural gas pipeline by the laser is prerequisite. The basic theory of the airborne laser-to-ground positioning system was briefed and the realized method was introduced, and the influence of the laser on the positioning system was analyzed. The general error equation of this remote sensing system was derived from the error propagation law and the accuracy under different conditions was estimated. The results show that the position and orientation accuracy of the airborne is the main factor affecting the positioning accuracy. The error in pitch angle plays a more important role in ground point error, while the roll angle has little effect. Under the consideration of point positioning accuracy, the influence of the error in altitude is the least. These analysis results can enhance the efficiency of error prevention and error compensation.