Jurnal Geosaintek, Vol. 9 No. 3 Tahun 2023. 176-182. p-ISSN: 2460-9072, e-ISSN: 2502-3659 176 Artikel diterima 21 Agustus 2023, Revisi 01 Oktober 2023 Online 21 Desember 2023 http://dx.doi.org/10.12962/j25023659.v9i3.18657 ULITIZING POST PROCESSING KINEMATIC (PPK) UNMANNED AERIAL VEHICLE (UAV) TO ACCELERATE DETAILED LAND MAPPING Regita Faridatunisa Wijayanti 1* , Niswah Selmi Kaffa 3 , Taufik Kusetiyohadi 4 , Hesekiel Sijabat 5 , Angga Pratama Putra 2 , Septa Erik Prabawa 1 , Yunus Susilo 1 1 Program Studi Teknik Geomatika-Fakultas Teknik Universitas Dr. Soetomo, Surabaya, Indonesia 2 Program Studi Agrobisnis Perikanan-Fakultas Pertanian Universitas Dr. Soetomo, Surabaya, Indonesia 3 Prodi Teknik Geomatika-Fakultas Teknik Universitas Jenderal Achmad Yani, Cimahi, Indonesia 4 PT. Zona Spasial, Bandung, Indonesia 5 Kementerian Agraria dan Tata Ruang/Badan Pertanahan Nasional (ATR/BPN) Bogor, Indonesia e-mail : regita@unitomo.ac.id Abstrak. The accelerate of land registration is important to solve the land disputes. Start from 2022, BPN utilize UAV to make base maps quickly. One of photo map criteria is high horizontal accuracy of <0.5 meter by using Circular Error 90% (CE90). This research analyzes the effectiveness of PPK method on UAV survey to accelerate detailed land mapping in Indonesia. UAV fixed wing Vertical Takeoff and Landing (VTOL) model with Sony ILCE-6000 camera flown on 9.46 km 2 areas, flying on 244 meters, and using 8 Ground Control Points (GCP) in Muktisari Village, Ciamis. First, UAV camera coordinates processed to obtain photo mosaic. Furthermore, geometric correction processed with GCP to obtain orthophoto for each mosaic photo. The UAV without PPK produced CE90: 0.02 meter (RMSE: 0.013 meter), whereas the UAV using PPK produced CE90: 0.008 meter (RMSE: 0.005 meter). According to the CE90 value on UAV showed resulting photo map included in 1:1000 scale aerial photo map in class 1. However, this research showed the UAV using PPK is 2.5 times more accurate. In conclusion, PPK can improve the performance of UAV to increase the photo map geometry accuracy. Hence, UAV using PPK are recommended to accelerate detailed land mapping in Indonesia. Keyword: UAV; PPK; GCP; Detailed Land Mapping INTRODUCTION Agrarian or land issues are the most reported in Indonesia. In 2022, 339 reports cited agrarian substances (Ombudsman, 2022). To resolve land issues or disputes, the government implemented a Complete Systematic Land Registration (PTSL). Beginning in 2022, BPN use UAV technology to accelerate the mapping process, particularly when creating base maps. In the form of photo maps, image maps, and line maps from terrestrial mapping, the basic land map contains thematic geospatial information that serves as the foundation for land registration activities in Indonesia. For the procurement of photo maps, there are several output criteria, such as GSD 0.15 m, CE90 1.5 m, and image visualization is clear, not blurry, not broken, and not curved. GCP is commonly used for geometric correction on UAVs. GCP is measured by observing using Global Navigation Satellite System (GNSS) tools spread across the work site. GCPs must be installed as part of a network, which takes time. The quantity and distribution of GCPs then have an impact on accuracy (Sanz-Ablanedo et al., 2018). Furthermore, the disadvantage of GCPs is depending on the soil conditions and observation sites, GCPs cannot be placed in difficult terrain for practical or safety reasons (Zhang et al., 2019). PPK- GNSS is thus used to maximize performance in geometric correction, stabilization, and GCP measurements to save time and resources (Dinkov & Kitev, 2020). The PPK GNSS has been used in numerous studies for UAV surveys (Sanz-Ablanedo et al., 2018; Tomaštík et al., 2019; Taddia et al., 2020; Elkhrachy, 2021). However, geometric correction using the PPK method still requires less GCP than geometric correction without PPK. Thus, the purpose of this study was to assess the effectiveness of the PPK method for geometric correction in UAV surveys to accelerate detailed land mapping in Indonesia using the parameter conditions established by the Indonesian National