PPK在sUAS航测中的应用及精度分析

Application of PPK in sUAS Aerial Survey and Its Accuracy analysis

探讨了在不使用GCP,仅依靠GNSS动态后处理(PPK)技术获取的具有精确定位的影像实现地理配准,并把基于GNSS实时动态(RTK)技术获取的地理配准成果和通过地面GNSS-RTK技术采集的检查点进行比较。研究分析结果表明在相机校准的前提下,不采用GCP仅依靠GNSS动态后处理(PPK)技术获取的具有精确定位影像的地理配准成果也可以达到cm级定位精度。

In this article,we explored the use of GNSS dynamic post-processing(PPK)technology to obtain geographic registration without using GCP.Then,we compared the results of geographic registration with precise positioning images based on GNSS real-time kinematics(RTK)technology with the checkpoints collected by ground GNSS-RTK technology.The results show that under the premise of camera calibration,the geographic registration results with precise positioning images obtained by relying solely on PPK technology can also achieve centimeter-level positioning accuracy.The conclusions of this study can help practitioners conduct aerial survey of sUAS.