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[IEEE 2018 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2) - Beijing, China (2018.10.20-2018.10.22)] 2018 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2) - Study on Fractal Butterfly Antenna Sensors Detecting Partial Discharge UHF Signal Propagating from GIS Placing Hole
摘要： Detecting the Ultra-High Frequency (UHF) electromagnetic wave has been acknowledged as an effective method in the measurement of varied kinds of partial discharges in Gas Insulated Switchgear (GIS). However, electromagnetic wave has been shielded completely owing to the steel flange around the insulator in recent years. Detecting the electromagnetic wave propagating from the placing hole in the steel flange becomes the only practicable method. The traditional sensors enter a bottleneck stage when they are used to detecting the electromagnetic wave propagating from the placing hole. The sensitivity declines a lot and output signal becomes weaker. At present, there are no relevant sensors, which detecting UHF electromagnetic wave propagating from placing hole. By adopting the fractal technology, back cavity and loaded resistor, the UHF sensor of fractal butterfly antenna was developed based on the software of High Frequency Structure Simulator(HFSS). Equivalent height was tested in the platform of Giga hertz Transverse Electromagnetic(GTEM) chamber. Detection sensibility and validity was professionally tested via applied in an experimental platform of 220kV GIS. It is concluded that the fractal butterfly antenna sensor belongs to the linear polarized antenna. The available frequency range is concentrated in 0.8-2GHz. The average equivalent height of fractal butterfly antenna is twice more than the traditional sensors. Detecting sensitivity of partial discharge is lower than 20pC.
关键词： placing hole,GIS,partial discharge,fractal butterfly antenna
更新于2025-09-23 15:23:52
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[IEEE 2018 10th International Conference on Intelligent Human-Machine Systems and Cybernetics (IHMSC) - Hangzhou (2018.8.25-2018.8.26)] 2018 10th International Conference on Intelligent Human-Machine Systems and Cybernetics (IHMSC) - SAR and Optical Image Registration Method Based on Quantum Particle Swarm Optimization
摘要： Abstract: In the most important step of GIS and optical image fusion, in order to improve the registration accuracy and efficiency of the strategic target, a new image registration method based on quantum particle swarm optimization (QPSO) with independent optical selection is presented. The proposed method consists of three steps: first, it decomposes the optical image into different frequency components with the wavelet transform; second, it extracts the feature corner points with the Harris corner detector; and finally, it constructs the similarity measure by combining the mutual information and the spatial distance, and uses the QPSO algorithm to search the optimal transformation parameters. The experimental results show that the proposed method is effective and feasible, it can achieve high accuracy and robustness for the low-frequency component of the optical image.
关键词： GIS Image,Image Registration,Independent Optical Selection,Quantum Particle Swarm Optimization,Optical Image
更新于2025-09-23 15:22:29
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Camera localization for augmented reality and indoor positioning: a vision-based 3D feature database approach
摘要： The recent fast development in computer vision and mobile sensor technology such as mobile LiDAR and RGB-D cameras is pushing the boundary of the technology to suit the need of real-life applications in the fields of Augmented Reality (AR), robotics, indoor GIS and self-driving. Camera localization is often a key and enabling technology among these applications. In this paper, we developed a novel camera localization workflow based on a highly accurate 3D prior map optimized by our RGB-D SLAM method in conjunction with a deep learning routine trained using consecutive video frames labeled with high precision camera pose. Furthermore, an AR registration method tightly coupled with a game engine is proposed, which incorporates the proposed localization algorithm and aligns the real Kinetic camera with a virtual camera of the game engine to facilitate AR application development in an integrated manner. The experimental results show that the localization accuracy can achieve an average error of 35 cm based on a fine-tuned prior 3D feature database at 3 cm accuracy compared against the ground-truth 3D LiDAR map. The influence of the localization accuracy on the visual effect of AR overlay is also demonstrated and the alignment of the real and virtual camera streamlines the implementation of AR fire emergency response demo in a Virtual Geographic Environment.
关键词： LiDAR,virtual geographic environment (VGE),localization,indoor positioning,camera pose,Augmented reality (AR),indoor GIS,3D reconstruction
更新于2025-09-23 15:22:29
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Spatial modeling for the optimum site selection of solar photovoltaics power plant in the northwest coast of Egypt
摘要： The unbalanced distribution of the Egyptian population causes serious social and economic problems. Redistributing population density to fully utilize the uninhabited areas like desert regions is very critical. This requires discovering renewable energy and water resources, to achieve an optimal goal of the sustainable national strategy. Therefore, this paper aims to define the most suitable locations for establishing the photovoltaic (PV) power plants considering the techno-economic and environmental conditions, assuring the maximum power achievement with minimizing project cost. To achieve this, the integration of Geographic Information System (GIS) tools, Remote Sensing technology (RS) with the Multi-Criteria Decision Making (MCDM) technique was performed. Among MCDM techniques, the Analytic Hierarchy Process (AHP) method has been used to determine the weights of the multi-criteria (techno-economic and environmental) as a more suitable tool to solve site selection problems. The obtained results showed that the entire region's surface receives a large amount of radiation, as the maximum and the minimum values of solar radiation for 2018 were 5.9 - 4.7 kWh/m2/day, respectively. The Land Suitability Index (LSI) map was created to evaluate the potentiality of the sites. LSI was classified into five categories: “most suitable,” “highly suitable,” “moderately suitable,” “marginally suitable,” and “least suitable”. As a result, 24.9 % (261.1747 km2) of the investigation area is more suitable and promising for deploying photovoltaic (PV) power plants.
关键词： Multi-Criteria Decision Making,Egypt,Photovoltaics power plants,GIS,Remote Sensing
更新于2025-09-23 15:21:01
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Vine Signal Extraction – an Application of Remote Sensing in Precision Viticulture
摘要： This paper presents a study of precision agriculture in the wine industry. While precision viticulture mostly aims to maximise yields by delivering the right inputs to appropriate places on a farm in the correct doses and at the right time, the objective of this study was rather to assess vine biomass differences. The solution proposed in this paper uses aerial imagery as the primary source of data for vine analysis. The first objective to be achieved by the solution is to automatically identify vineyards blocks, vine rows, and individual vines within rows. This is made possible through a series of enhancements and hierarchical segmentations of the aerial images. The second objective is to determine the correlation of image data with the biophysical data (yield and pruning mass) of each vine. A multispectral aerial image is used to compute vegetation indices, which serve as indicators of biophysical measures. The results of the automatic detection are compared against a test field, to verify both vine location and vegetation index correlation with relevant vine parameters. The advantage of this technique is that it functions in environments where active cover crop growth between vines is evident and where variable vine canopy conditions are present within a vineyard block.
关键词： precision viticulture,remote sensing,segmentation,GIS,Precision agriculture,classification
更新于2025-09-23 15:21:01
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Laser Slicinga?￠Process for Gan-on-Gan Technology
摘要： In recent years, well-designed terminal-based methods for collecting index data have gradually replaced traditional pen-and-paper methods and have been extensively used in numerous studies. These new approaches offer users increased accuracy, efficiency, consumption, and data compatibility compared to traditional methods. In general, we find that spatial data content and quality index systems vary widely across different arable land regions. Thus, a system for the investigation of arable land quality indices that has the flexibility to utilize various types of spatial data and quality indices without requiring program modification is needed. This paper presents the framework, the module partition, and the structure of the data exchange interface for a highly flexible mobile GIS-based system, which we call the “arable land quality index data collection system” (ALQIDCS). This system incorporates a series of self-adaptive methods, a data table-driven model and two types of formulas for flexible data collection and processing. We tested our prototype system by investigating arable land quality in the Da Xing District, Beijing and in the Te Da La Qi District, Inner Mongolia, China. The results indicate that the ALQIDCS can effectively adapt to variations in spatial data and quality index systems and meet different objectives. The limitations of the ALQIDCS and suggestions for future work are also presented.
关键词： mobile geographic information system (GIS),Android,Agricultural data collection,arable land quality monitoring
更新于2025-09-23 15:19:57
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Multi-criteria decision-making model for assessment of large photovoltaic farms in Brazil
摘要： The decision of the location for the installation of photovoltaic power plants is a critical issue for large-scale projects due to climatic aspects, the proximity to other facilities, and the presence of protected environmental areas. The objective of this study is to propose a model capable of indicating the best location for the implantation of large-scale photovoltaic projects in the Brazilian territory. According to the proposed modeling, the relevant factors were identified to be considered in the choice of the ideal place, which were combined with the GIS-MCDM tools. The analysis of the areas was processed by the gvSIG software, using AHP methods for the evaluation of the factors and TOPSIS for ranking the alternatives. In application of this model, a total of 453 areas were identified that could receive a large photovoltaic installation, equivalent to 1823.35 km2 of the study area. Among these study areas, 67.23% of them are improper, 0.52% is good, 12.34% are very good, and only 19.91% are excellent. In order to validate the quality of the solution obtained by the proposed methodology was applied a detailed analysis with two scenarios. In the first one are used weights equal to all the criteria and in the second, the MAUT method was applied to rank the alternatives. The modeling proposed in this paper combining with GIS-MCDM is applicable to similar investigations in other regions and also to evaluate the spatial adequacy of other renewable energy technologies.
关键词： Solar energy,Geographic Information System (GIS),Determinant factors,Multi-Criteria Decision Making (MCDM),Restrictive Factors
更新于2025-09-23 15:19:57
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Monitor and Study Horizontal and Verticals Changes at Land Surface in Wen Chuan Area from 1974 to 2010 Using Remote Sensing and GIS Technology
摘要： Wenchuan area has been one of the seismically active regions. The occurrences of earthquakes are largely controlled by active faults. The results showed that in Wenchuan area, movements of plate tectonic were not in the same direction in recent 40 years and when there was a change in the direction of plate tectonics there was an earthquake in Sichuan, or on Tibet plate, but most of the earthquakes were in the region between plate Sichuan and Tibet plate. The idea is to compare between images from the same satellite for same area in different years by using remote sensing and GIS technology. The result will become better if there are images of the same area every year. The satellite images were used from 1974-1976 land sat-1,2, 1989-1996 land sat-4,1999-2005 land sat -7, Google earth images 2005-2008 after and before the earthquake Wenchuan 2008, Geomorphic features are extracted from the Shuttle Radar Topography Mission (SRTM) DEM data 2002 and 2010, SRTM DEM and Land sat data were used to extract the geo morphometric Features and structures. The relationship between the topography and tectonics is assessed to understand the evolution mode.
关键词： Horizontal and verticals changes,Wen Chuan,Remote sensing,GIS
更新于2025-09-19 17:15:36
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Spatial Model of Sky Brightness Magnitude in KUSZA Observatory, UniSZA
摘要： Light pollution is the by-product of anthropogenic activities result from the increases in advanced economic and urbanization. Light pollution limits the ability to view the night sky by astronomers, on biodiversity, and ecosystems. This technology nowadays has led us to increase the convenient method to observe the brightness of night sky to determine how much the night sky polluted by artificial light. The study used SQM device and monitored the sky brightness of the KUSZA Observatory in Merang, Setiu, Terengganu, Malaysia. The results obtained were used to compare with the results obtained by simulation data generated from Earth Observation Group (EOG) of National Oceanic and Atmospheric Administration (NOAA), National Geophysical Data Center. It is the first world atlas of the artificial night sky brightness using GIS Interpolation tools. The result showed that the Kusza Observatory Merang is still appropriate to be the place of observation of celestial objects to either optical or radio astronomers. Hence, we recommended that through the data obtained from Defense Meteorological Satellite Program (DMSP) satellites, the value of sky brightness from all over the world can be used to make further analysis and to increase the precision of data recorded through observations. This study provides a clear view mapping of the accessing the sky condition using Geographic Information System (GIS) analysis in the study area.
关键词： Light Pollution,GIS,SQM,Sky Brightness,Simulation
更新于2025-09-19 17:15:36
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Can a city reach energy self-sufficiency by means of rooftop photovoltaics? Case study from Poland
摘要： The process of decarbonising economies has to take place on a multiple levels. One of the objectives is to ensure renewables-based energy self-sufficiency of cities. Cities have become home to the majority of the world’s population, and at the same time contribute enormously to environmental pollution. Considering the above, the purposes of this paper are threefold: to formulate a methodology for estimating rooftop photovoltaics (PV) potential in urban areas based on detailed Light Detection And Ranging (LiDAR) data; to calculate the spatial variability of load and photovoltaics energy supply, and thus to distinguish zones with various levels of energy self-sufficiency; and finally, to scrutinise the economic and environmental aspects of such a solution in given conditions. Wroc?aw, the capital city of the Lower Silesia voivodeship (NUTS 2 administrative division) in south-west Poland (Central Europe), was selected as a case study. The city has a population of close to 650,000 and an annual electricity consumption slightly exceeding 2.2 TWh. Industry constitutes 46% of that demand, and households 31%. The results show that up to 850 MW of rooftop PV can be installed in the city, which has the potential to reduce the electrical energy related emissions by almost 30% and simultaneously to increase the city’s energy self-sufficiency. Although energy storage, in the form of batteries, slightly improves both the autarky and environmental indices, the relation between potential PV generation and load makes them very infrequently useful (mostly in summer) and not economically justified.
关键词： renewable energy,power system transition,LiDAR,GIS,self-sufficiency
更新于2025-09-19 17:13:59