The use of Global Positioning System (GPS) precise point positioning (PPP) on a fixed‐wing unmanned aerial vehicle (UAV) is demonstrated for photogrammetric mapping at accuracies of centimetres in planimetry and about a decimetre in height, from flights of 25 to 30 minutes in duration. The GPS PPP estimated camera station positions are used to constrain estimates of image positions in the photogrammetric bundle block adjustment, as with relative GPS positioning. GPS PPP alleviates all spatial operating constraints associated with the installation and the use of ground control points, a local ground GPS reference station or the need to operate within the bounds of a permanent GPS reference station network. This simplifies operational logistics and enables large‐scale photogrammetric mapping from UAVs in even the most remote and challenging geographic locations.

中文翻译：

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GPS精确点定位，用于无人机摄影测量

演示了在固定翼无人飞行器（UAV）上使用全球定位系统（GPS）精确点定位（PPP）进行摄影法制图，测绘精度为25厘米至30厘米，高度为平面厘米级分钟的时间。与相对GPS定位一样，GPS PPP估计的相机站位置用于约束摄影束块调整中的图像位置估计。GPS PPP减轻了与安装和使用地面控制点，本地地面GPS参考站或在永久性GPS参考站网络范围内进行操作的需求相关的所有空间操作限制。