Major cities and urban areas are beginning to develop and use 3D properties and public facilities. Consequently, 3D cadastral surveys are increasingly being employed for strata unit ownership registration as a part of land administration services. At present, most national land information systems do not support 2D and 3D cadastral visualizations. A field survey or validation survey is required to determine the geometry of 3D spatial units for property registration. However, the results of 3D surveys and mapping are not stored in the land information system. This work aims to integrate 2D and 3D geospatial data of property units collected from cadastral surveys with their corresponding legal data. It reviews the workflow for the use of 3D survey data for first-titling of 3D properties in Indonesia. A scenario of use and a prototype were developed based on existing practices and the possibility of extending Indonesia’s Land Administration Domain Model (LADM) to represent 3D units. Data submitted to the prototype as 3D geometries was survey data from 3D cadastral surveys or validation surveys utilizing terrestrial survey methods. The prototype used PostGIS and Cesium Ion to store 3D geometries of data from six 3D surveys. Registrars in local land offices could use the prototype to undertake strata unit registration that establishes a relationship among geospatial features and their survey documents and legal documents. Cesium JS was used as a 3D browser, customized as a web application, to manage and visualize 3D survey data to support strata title registration. The results demonstrate that the first titling of 3D cadaster objects could be conducted and properly visualized in Indonesia by extending the existing LADM with more support for 3D spatial representations and survey documents.

<p><strong>Abstract.</strong> This paper is focused to address the map display usability for finding given POI addresses in a popular urban city area. LOD 1 of 3D representations of city buildings are presented into a 2.5D map for pedestrian navigation test. This 3D map display is evaluated against familiar 2D map system on the test participants’ smartphones. 16 participants were involved in the field test. The typical walking model of a searching task that is focused only to look for a certain address of building is chosen as the way finding model during the field test. Three kinds of navigation processes i.e. self-orientation, spatial knowledge acquisition and navigation decision for searching task were evaluated for each test participant. Usability measures of 3D map-based display over 2D-map based display for pedestrian navigation were collected from test participants’ mobile devices. In addition to that, activities of test participants in terms of acceleration and orientation information are used to support analysis of pattern and trends of test participants. As the testing app is also intended to support smart city application, its ability to provide user report on complaints was also assessed. Most participants agreed with the statements in the questionnaire that were organized into three sections, i.e. addressing participants’ interaction, participants’ responses in navigation processes and crowdsensing. The results suggest that 3D map-based pedestrian navigation is more usable to be used to look for a certain address of building in central tourist area of urban city.</p>

Expansion or establishment of new regions (Provinces, Regencies/Cities) is a consequence of the politics of decentralization implemented in Indonesia. The development of decentralization in Indonesia underwent fundamental changes after the reformation in 1998. Inception of UU No 22 tahun 1999 concerning regional government has given a new color to the administration of government in Indonesia or what is called broad autonomy. Restructuring regional governments that provide discretion in the form of broader authority in running their government in accordance with regional needs has created many implications for the region, one of which is stretching and the spirit of the region to bloom. In determining the boundaries of forming new regions, the geospatial aspect is an important and strategic aspect. Problems related to geospatial aspects such as maps of regional boundaries, area size, etc are issues that need to be clearly defined and calculated in the new (autonomous) regional (Province, Regency/City) determination. But in fact the law on the formation or establishment of regions in the period 1950-1999 on the geospatial aspect did not become an important part so that it caused problems later which could potentially trigger social conflicts such as regional boundary disputes. Post-reformation, the development of the role of the geospatial aspects has evolved a little more advanced, such as the existence of regional boundary maps in the appendix to the law on the formation or expansion of new regions, such as UU No 7 tahun 2002, UU No 2 tahun 2003, and others. However, there is still something that must be evaluated regarding the map in the attachment to be in accordance with the geospatial rules. A very progressive development in terms of the geospatial aspect is in UU No 20 tahun 2012 concerning the formation of the Kalimantan Utara province that utilizes geospatial data properly

UAV (Unmaned Aerial Vehicle) atau yang biasa disebut drone saat ini telah banyak digunakan untuk pemetaan wilayah di Indonesia. Salah satu metode penentuan posisi satelit GNSS (Global Navigation Satelitte System) yaitu dengan metode statik. Penelitian ini mengkaji perbadingan ketelitian foto udara UAV dan foto udara UAV yang telah diikatkan dengan GNSS. Tahapan awal dalam penelitian ini adalah dilakukan pengambilan foto udara UAV wilayah Gampong Lambarih, kemudian dilakukan pengambilan data GNSS di lapangan sebanyak 4 titik di kawasan Gampong Lambarih, Aceh Besar dengan menggunakan titik kontrol atau titik ikat stasiun CBDA dengan doy 040 di Jantho. Tiap titik pengamatan dilakukan selama 30 menit dengan interval waktu pengukuran 1 detik. Pengolahan data UAV menggunakan aplikasi Agisoft dan pengolahan data GNSS menggunakan aplikasi HiTarget Geomatic Office (HGO) dan Website BIG. Hasil penelitian menunjukkan foto udara UAV yang diikat dengan GNSS memiliki ketelitian yang lebih tinggi yaitu mecapai ketelitian orde mm. UAV (Unmaned Aerial Vehicle) or what is commonly called a drone is currently widely used for regional mapping in Indonesia. One method of determining the position of the GNSS (Global Navigation Satelitte System) satellite is the static method. This study examines the comparison of the accuracy of UAV aerial photographs and UAV aerial photographs that have been tied to GNSS. The initial stage in this research was to take aerial photographs of the UAV of the Lambarih Village area. Then the GNSS data collection was carried out in the field as many as 4 points in the Gampong Lambarih area, Aceh Besar using the control point or tie point of the CBDA station with doy 040 in Jantho. Each observation point was carried out for 30 minutes with a measurement time interval of 1 second. UAV data processing uses the Agisoft application and GNSS data processing using the HiTarget Geomatic Office (HGO) application and the BIG Website. The results showed that aerial photographs of UAVs bound with GNSS had a higher accuracy reaching in order of mm. Keywords: GNSS, UAV, Statik, BIG, HGO

Indonesia is one of the nations located in the Ring of Fire. High geodynamic occurrences cause often occurring earthquake tectonics in Indonesia.