Based on the advantage of GPS (Global Positioning System)-RTK (Real-time kinematic) rapid positioning technique
a GPS-RTK-assisted close-range photogrammetric bundle adjustment method is presented. On the basis of the conventional photogrammetric adjustment model
GPS-RTK observation equations are added. According to the relative offset between the GPS observation center and the camera projecting center
GPS-RTK observations are given appropriate weights and a rigorous adjustment is carried out according to the least-squares principle. The experiment results show that the parameters solving process is stable and the planar location precision can be 0.02 m
and the new adjustment method can reduce the accuracy requirement of the initial parameter value.
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references
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