The Measuring Method and Accuracy Assessment of Open Traverse Additional Gyro-orientation
During the construction of subway tunnel,horizontal control survey usually adopts open traverse,the accuracy and reliability of open traverse can be improved by measuring the gyroscope azimuth angle.In order to ensure observation quality,we have to research the limit during the measurement process when determining the observation plan.Combining with the examples of project,this paper introduces the ob-servation method of gyroscope azimuth angle,analyzed the main sources of errors and confirmed the limit during the measurement process,re-search the data processing method and accuracy evaluation of open traverse additional gyro-orientation.
open traversegyro-orientationlimit analysisaccuracy evaluation
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