Abstract: In this paper, unmanned aerial vehicle (UAV) is used as a low altitude remote sensing platform. On the basis of integration of small light measurement camera with dual frequency high dynamic GPS, a three axis stabilized platform device can stably keep the camera attitude angle of UAV, make digital image shooting can meet the requirements of large scale mapping. The system is successfully applied in the 1:500 large-scale topographic mapping project. The experimental results show that the accuracy of the system can be well suited to the requirements of the national photogrammetric mapping standards and the urban surveying standards.

Key words: UAV aerial survey system, stable tilt table, large scale mapping