单频RTK动态精度检测法及实验验证

Single-frequency RTK technology is widely used in high-accuracy mapping, unmanned driving and other fields. A single-frequency RTK dynamic accuracy detection method is proposed to accurately quantify the dynamic positioning accuracy. It is easy to operate, suitable for a wide area and does not need additional auxiliary equipment. Using this method, we first establishes some reference lines on the ground, then measures RTK static and dynamic combined data along the reference lines in the run-stop mode. The static data are fitted by the total least squares algorithm to get the called checking lines, which are then used as the references for evaluating the dynamic positioning accuracy. The reliability of the proposed method is also checked using the same sets of the test data. During accuracy assessment, the average deviation from the dynamic point to the checking lines is used as the dynamic accuracy index, and the reliability index of the method is characterized by the difference between the distances of two reference lines and those of two checking lines. The experimental results show that the proposed method has high reliability and can accurately quantify the dynamic positioning accuracy of single-frequency RTK of about 2-5 cm.