飞行摄影测量中的立体模型重建研究：论文对照与操作技术分析

This paper discusses the operational issues and basic technical requirements of modern aerial photogrammetry. When reconstructing a stereo model, the accuracy of photogrammetric points is determined by the exterior orientation elements in aerial photogrammetry and the parallax analysis in the corresponding model points. True aerial photography, with image scales ranging from 1:2,500 to 1:60,000, is supported by DGPS/IMU data from various terrains, processed in China by our POS-supported large-area network adjustment plan WuCAPS. Empirical results confirm that the accuracy of the exterior orientation elements derived from the large-area network adjustment meets the requirements of topographic survey specifications. However, the accuracy of the exterior orientation elements determined by POS cannot meet the requirements of topographic survey specifications. Keywords: aerial triangulation (AT); GPS (Global Positioning System); POS (Positioning and Orientation System); stereo model reconstruction; ground control points (GCPs); accuracy. Introduction Aerial photogrammetry is the science and technology of obtaining three-dimensional spatial information about the Earth's surface from aerial images. The determination of photogrammetric points, where ground objects are identified using images, is based on remote sensing. The key issue is to quickly and accurately determine the position of images and the instantaneous images on the ground. This goal is achieved through aerial triangulation based on distributed ground control points. With the development of spatial positioning technologies, remote sensing techniques, computer science, and the evolution and development of aerial triangulation towards digital without ground control points.