Error analysis of a reflector in total station angle measurement

摘要

The total station has been widely applied in engineering and industrial surveying systems by which the distance and angle can be acquired automatically. In order to acquire a high accuracy in the measurement, it is one of the important points to select the right reflector and use a constant correction. But people usually pay more attention to the accuracy of the instrument than to the accuracy of the reflector. In this paper, the structure of the reflector and the error sources of the reflector are discussed and the error values of reflector are calculated. We analysed and tested all types of reflectors that are manufactured by Leica Geo-systems (general circle reflector, precision circle reflector, 360° reflector, ball reflector, tape) in the FAST paraboloid antenna model measurement in Miyun Beijing. The test result show that it is important to select the right reflector and give a precise correction for the total station to get a measurement result of high accuracy.