Low Altitude Photogrammetry Positioning Technology in Evaluation of GNSS Dynamic Positioning Accuracy

摘要

Positioning accuracy test of GNSS is of great significance. The dynamic positioning evaluation technology is worthy of study. This paper gives a good solution. When the geodetic coordinates of the ground mark points are known, the exterior orientation elements of the high quality nonmetric digital camera can be precisely calculated in low altitude photogrammetry. The simulation results show that the coordinates of the exposure station of the camera can be precisely calculated. Finally, an actual test was held in the actual photogrammetry environment. These works lay the foundation for low altitude photogrammetry evaluation test for the next step.