Hasil untuk "Cadastral mapping"

Massimo Morigi

Satellite-based Synthetic Aperture Radar (SAR) technologies provide an essential operational capability for the detection and monitoring of environmental damage caused by hydrocarbon spills. SAR observations allow continuous monitoring independent of weather conditions or daylight, enabling rapid response and detailed characterization of dynamic surface processes. The case study of the major oil spill that affected the Adriatic Sea on 27 May 2025 demonstrates the effectiveness of multi-temporal SAR data integration and in reconstructing the evolution of the spill over approximately 400 km of coastline. Such operational services are offered by e-GEOS and EMSA, through the SEonSE and CleanSeaNet platforms, respectively. The adoption of SAR-based monitoring frameworks strengthens early warning systems, supports environmental protection authorities, and enhances decision-making capabilities in emergency management and long-term territorial control.

Ziggah Yao Yevenyo, Mantey Saviour, Laari Prosper Basommi

Modern surveying practice has embraced the use of Global Navigation Satellite System (GNSS) technology due to its attainable precision and uncomplicated functionality. The adoption of this technology has therefore necessitated the transformation of coordinates between satellite-based and classical geodetic reference datums. It is known that the 3D similarity-based transformation models are the most widely used in the literature. However, one major limitation of such models is the representation of point rotations in space using Euler angles connected to X, Y, and Z-axes, which often leads to matrix singularities. To overcome this mathematical inconvenience, the dual quaternion is proposed. This paper implements the dual quaternion algorithm to transform coordinates between the World Geodetic System 1984 (WGS84) and Ghana War Office 1926. To perform the transformation, 31 common points were divided into two parts: reference and check points. The reference points, consisting of 24 common points that are evenly distributed across Ghana, were used to derive the transformation parameters. The remaining 7 points were used to evaluate the derived transformation parameters. The results confirmed that the coordinates transformed by the dual quaternion algorithm are in average agreement with the measured coordinates, with precision and accuracy levels of about 0.580 m and 1.023 m. The obtained results follow the Bursa-Wolf model that is already used by the Ghana Survey and Mapping Division to perform 3D transformations. Hence, the results satisfy cadastral applications, geographic information works, reconnaissance, land information system works and small-scale topographic surveys in Ghana.

Marco Lisi

Jamming interference to GNSS receivers is a growing threat as more systems and devices rely on GNSS for Positioning, Navigation, and timing (PNT). The European GNSS Agency (GSA today EAASA) estimated there were 6.4 billion GNSS-enabled devices in use worldwide in 2019, and forecasts this will rise to 9.5 billion by 2029 — equivalent to 1.1 devices for every person in the world.

Tiziana Primavera

LiDAR (Light Detection and Ranging) is an extremely effective and consolidated technology based on laser light, whose purpose is the geometric-spatial remote detection, through the calculation of the distances of the target object carried out through the so-called time of flight TOF (Time of flight or time that the wave takes between the instant in which it is emitted and that in which it is received). Since the 1980s it has been used in the characteristic sectors of geomatics, but not only: thanks to the combined data deriving from global positioning systems (GPS) and inertial measurement units (IMU) it was possible to identify the accurate positioning of aircraft. in flight. Therefore, although it is not a recent technology, in recent years it has been used in numerous geospatial projects. Lidar data can be expensive, however, due to the growing demand - an offer characteristic of the geospatial user community - we are starting to see the availability of open source LiDAR data sets, i.e. made available to the public.

G. He, L. Li

G. He, L. Li

Abstract. The state attaches great importance to the issue of the right to the use of rural land. At present, China is carrying out a large-scale mapping and confirmation of rural house sites and rural houses. The traditional measurement method mainly adopts total station or RTK manual measurement method, which is characterized by high work intensity, complex operation procedure and labor-consuming. There are hundreds of thousands of villages in China. With the development of science and technology, it is an inevitable trend to use new technologies in rural cadastral surveys to improve their efficiency and quality. LiDAR scanning technology has the advantages of high efficiency, flexibility, reliability, and high accuracy, which meet the requirements of tasks and schedules that are difficult to complete with traditional measurement methods. This paper is based on the AS-300H multi-platform LiDAR system of Huace Navigation, which integrates UAV and vehicle LiDAR for cadastral surveying and mapping. It proves that LiDAR using in rural cadastral mapping has low labor intensity, high efficiency and accuracy. At the same time, the advantages and disadvantages of LiDAR technology for cadastral mapping are also summarized and elaborated, which has a good reference and significance for those who are currently conducting rural housing and cadastral mapping work.

J. F. R. Gordo, R. Romero-Záliz, Carlos A. León-Robles et al.

Sometimes it is necessary to know the transformation to apply to a mapping shape in order to locate its true place. Such an operation can be computed if a corresponding reference object exists and we can identify corresponding points in both shapes. Nevertheless our approach does not need to match any corresponding point beforehand. The method proposed defines a polygon in the frequency domain—two periodic functions are derived from a polygonal or polygon. According to the theory of elliptic Fourier descriptors those two periodic functions can be expressed by Fourier expansions. The transformation can be computed using the coefficients of the harmonics from the corresponding shapes without taking into account where each polygon vertex is placed in the spatial domain. The transformation parameters will be derived by a least squares approach. The geomatics and geosciences applications of this method go from photogrammetry, geographic information system, computer vision, to cadaster and real estates.

Sungeon Hong

Edward Kurwakumire, S. Coetzee, P. Schmitz

Coping with rapid urbanisation and the impacts of climate change requires effective land management. Quality land information is essential for this. A land information infrastructure is a collaborative and coordinated initiative aimed at providing land information from different organisations, such as municipalities, government departments and private companies, to diverse user communities. A land information infrastructure is complex, spanning information streams through many organisations and technical systems, and presenting challenges for managing and monitoring the production of land information. In the manufacturing field, a supply chain refers to the stream of activities from the initial source to the delivery of end products to customers, and supply chain management is directed at optimising the creation of the products of such a chain. The Supply Chain Operations Reference (SCOR) model is widely used for analysing supply chain processes in order to quantify and improve product and service delivery, and it has also been applied to geographical information supply chains. In this study, the SCOR model is applied to the supply chain processes in a South African case study of a land information infrastructure focusing on the production of cadastral information products. The supply chain comprises a land developer, a land surveying firm, the Surveyor General’s and Deeds Offices, a geospatial data vendor and the end customer. This supply chain is mapped and analysed using supply chain mapping and the SCOR model, and based on this, the complexity of the land information infrastructure is revealed. The study shows that supply chain management and the SCOR model can be used to analyse, monitor and manage the production processes of land information within a land information infrastructure.

Marco Lisi

Come ben noto, COSMOSkymed è una costellazione di satelliti per uso “duale” (cioè civile e militare), finanziata dal Ministero della Difesa italiano e dall’Agenzia Spaziale Italiana (ASI), in grado di ottenere immagini della superficie terrestre ad alta risoluzione spaziale e radiometrica ed in tutte le condizioni metereologiche, attraverso l’uso di un radar ad apertura sintetica (Synthetic Aperture Radar, SAR). Sin dalla prima generazione, il consorzio industriale responsabile per lo sviluppo del sistema COSMO-Skymed include Thales Alenia Space Italia, primo contrattore, e Telespazio, responsabile del segmento terreno e delle operazioni.

Shirisa Timilsina, S. Sharma, J. Aryal

Abstract. Urban trees offer significant benefits for improving the sustainability and liveability of cities, but its monitoring is a major challenge for urban planners. Remote-sensing based technologies can effectively detect, monitor and quantify urban tree coverage as an alternative to field-based measurements. Automatic extraction of urban land cover features with high accuracy is a challenging task and it demands artificial intelligence workflows for efficiency and thematic quality. In this context, the objective of this research is to map urban tree coverage per cadastral parcel of Sandy Bay, Hobart from very high-resolution aerial orthophoto and LiDAR data using an Object Based Convolution Neural Network (CNN) approach. Instead of manual preparation of a large number of required training samples, automatically classified Object based image analysis (OBIA) output is used as an input samples to train CNN method. Also, CNN output is further refined and segmented using OBIA to assess the accuracy. The result shows 93.2% overall accuracy for refined CNN classification. Similarly, the overlay of improved CNN output with cadastral parcel layer shows that 21.5% of the study area is covered by trees. This research demonstrates that the accuracy of image classification can be improved by using a combination of OBIA and CNN methods. Such a combined method can be used where manual preparation of training samples for CNN is not preferred. Also, our results indicate that the technique can be implemented to calculate parcel level statistics for urban tree coverage that provides meaningful metrics to guide urban planning and land management practices.

B. Bramanto, I. Gumilar, M. Taufik et al.

In Indonesia, Global Navigation Satellite System (GNSS) has become one of the important tool in survey mapping, especially for cadastral purposes like land registration by using Real Time Kinematic (RTK) GNSS positioning method. The conventional RTK GNSS positioning method ensure high accuracy GNSS position solution (within several centimeters) for baseline less than 20 kilometers. The problems of resolving high accuracy position for a greater distance (more than 50 kilometers) becomes greater challenge. In longer baseline, atmospheric delays is a critical factor that influenced the positioning accuracy. In order to reduce the error, a modified LAMBDA ambiguity resolution, atmospheric correction and modified kalman filter were used in this research. Thus, this research aims to investigate the accuracy of estimated position and area in respect with short baseline RTK and differential GNSS position solution by using NAVCOM SF-3040. The results indicate that the long-range single baseline RTK accuracy vary from several centimeters to decimeters due to unresolved biases.

M. D’Arcy, Marina Nistotskaya

S. Crommelinck

Joaquín Torres-Sospedra, P. Nebot

The development of robotic applications for agricultural environments has several problems which are not present in the robotic systems used for indoor environments. Some of these problems can be solved with an efficient navigation system. In this paper, a new system is introduced to improve the navigation tasks for those robots which operate in agricultural environments. Concretely, the paper focuses on the problem related to the autonomous mapping of agricultural parcels (i.e., an orange grove). The map created by the system will be used to help the robots navigate into the parcel to perform maintenance tasks such as weed removal, harvest, or pest inspection. The proposed system connects to a satellite positioning service to obtain the real coordinates where the robotic system is placed. With these coordinates, the parcel information is downloaded from an online map service in order to autonomously obtain a map of the parcel in a readable format for the robot. Finally, path planning is performed by means of Fast Marching techniques using the robot or a team of two robots. This paper introduces the proof-of-concept and describes all the necessary steps and algorithms to obtain the path planning just from the initial coordinates of the robot.

Elisa Traverso, Renato Bruzzi, Claudio Tomassini

PAM: previsioni agricole multiculturali mediante l'utilizzo di immagini satellitari

KUSTOVSKA О., NOVAK N.

The article analyzes the development of corporate structures in agricultural production, proves the influence of corporate formations on the efficiency of agrarian production. On the basis of the analysis of official information of agro holdings, an assessment was made of the efficiency of their activities and a conclusion was made about the optimal size of their structural subdivisions. The advantages and disadvantages of integrated structures are highlighted, peculiarities of formation of their land relations are determined. Issues of expansion of land masses of agro holdings related to the conclusion of land lease agreements are considered. The association of separate agro-industrial enterprises of various industrial-economic orientation form an independent legal entity - a legal entity. The economic feasibility of the creation and functioning of corporate associations is objective based on obtaining the greatest effect, the essence of which is that the result of the joint corporate activities of economic structures will always be higher compared to the results of the individual work of each of them. Corporate forms of management in agriculture were founded in Ukraine on the basis of the general theoretical model of an open, competitive, multi-faceted agricultural market economy type, aimed at an integrated world economic system. The methodology of construction involves taking into account the world economic trends and the national specificity of the country's agricultural development; it is aimed at finding rational forms of organization of agricultural production, mechanisms for overcoming crisis phenomena, stabilizing the economy and creating conditions for further qualitative and quantitative growth of the agrarian sector of the economy. For many years, leading American co-operators have been distributing concepts and concepts that are perceived and used throughout the world. This work is coordinated by the Organization for International Cooperative Development in Agriculture, and thanks to its efforts, many countries in the world have implemented projects for the development and strengthening of cooperative organizations owned by agricultural producers. The experience of cooperative and corporatization in the US agriculture can be useful for restructuring the agriculture of countries undergoing a stage of market transformation, and Ukraine has the necessary conditions for developing, along with production agricultural cooperatives, corporate and partner forms of management. The essence of corporate structures in agriculture consists in the grouping of owners of land and property, funds of agricultural enterprises in a certain form of organization. The highest form of corporate education is considered to be those in which not individuals are integrated, but enterprises of different profile who work for the final consumer product. The consolidation of the land masses of agricultural holdings is largely due to the advantages of integrated structures: firstly, significant savings on the scale of acquisition of means of production: second, not new conditions of collateral - agricultural products are a pledge for non-agricultural activities of holdings. In order to improve the procedure for forming the land masses of integrated structures, it is necessary to: improve the system of state land resources management, continue to formulate the necessary legislative and normative base on issues of agrarian land use and functioning of the agricultural land market; to form an effective mechanism for the functioning of a fully-fledged, state-regulated market of agricultural land: to improve the economic mechanism of regulation of land relations.

Aldo Riggio

Topografia in qualità

Renzo Carlucci

L'integrazione di Remote Sensing, GIS e GPS

Alberto Cina

Stazioni permanenti GPS e misure cinematiche in tempo reale