Transforming more tough fieldwork, like GCP (Ground Control Point) measurements, into fast processing is always enjoyable to surveyors. As a specialized GNSS data software kit, SkyLines is engineered to deal with the flight lines and compute precise aerial positional information of drones equipped with an airborne PPK module. Corrected with base observations by post differential algorithm, the high-precision aerial positioning data is just a few mouse clicks away, which makes it more productive in the drone mapping workflow. By using this powerful tool, drone users can obtain highly accurate POS (Positioning & Orientation System) data at centimeter level via post processing and may be independent of ground control points for further adjustment in aerial triangulation.