低空无人机航测技术存在着很多技术短板,GPS辅助空中三角测量是低空无人机航测技术研究的突破口之一。基于此,结合曲靖市罗平县阿岗水库灌区无人机航测项目,介绍了差分GPS无人机航测技术的原理及作业流程。采用全控制和部分控制的布点方案,将差分GPS的解算结果参与空中三角测量加密,并与常规方法进行对比,得出差分GPS无人机航测技术的一些结论及建议。结果表明,差分GPS技术的应用可大幅提高无人机作业的精度和效率。

Low-altitude unmanned aerial vehicle(UAV) technology has many defects, and GPS-supported aero triangulation is one of the breakthrough of this technology. With the aerial drones project of Argonne reservoir irrigation in Luoping County of Qujing City as a research background, we described the principle and operation procedure of the differential GPS aerial UAV technology. By using the full-control and partial-control distribution plan of monitoring points, the solution of the differential GPS was involved in aerial triangulation and compared with that of conventional aerial operation method. Furthermore, we gave several conclusions and recommendations for differential GPS aerial drone technology. The results show that the application of differential GPS technology could greatly improve the operation accuracy and efficiency of UAV.