Karta över Furuviksparken : Kontroll enligt HMK:s gamla och nya dokument samt dokument från Norge och Finland

Sammanfattning: The purpose of the study was to compile a map of Furuvik theme park using UAS-photogrammetry and evaluate the products quality by performing a map control. The map control is carried out with guidelines from new and old HMK-documents and how such an evaluation is carried out in our neighbouring countries. At the same time, a time study was carried out on the project's workflow as a request from the University of Gävle (HiG) for a future Master's degree program in Land Surveying. The flight was carried out with a multicopter from Altigator. Prior to the flights, flight signals were placed and as well as, known points (stompunkter), were measured with SWEPOS network-RTK (real-time kinematic). The flight resulted in 1036 images, which in PhotoScan were joined together by block adjustment and generated an orthophotomosaic and a digital elevation model were generated. In ArcMap, from the orthomosaic, a map was produced, which was then controlled using measured control points. The results in the plan points show that the difference between objects in the produced map and their known coordinates varies radially between 0.0014 m and 0.029 m. The mean deviation is 0.009 m with the standard uncertainty (Sp) 0.014 m and the root mean square (RMS) 0,014 m. All requirements in HMK-Geodatakvalitet (Geodata Quality), HMK-Flygfotografering (Aerial Photography), HMK-Kartografi (Cartography), and similar documents from the Norwegian and Finnish national land survey were fulfilled. The requirements of the newer HMK documents on geodata quality and aerial photography are reasonable while HMK cartography needs updating as the requirements are too low, 0.07 m To control the height model, 18 control profiles were measured in according to the Swedish technical specification SIS-TS 21144: 2016. RMS in height for the entire area was 0.032 m. The duration of the study's implementation was documented to produce a time study that resulted in 374 hours of work during nine weeks.