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arXiv 2024年

作者： Mutasodirin, Mirza Alim Rizqullah, Rafi Dwi Setiyoko, Andie Arymurthy, Aniati Murni Faculty of Computer Science Universitas Indonesia Depok Indonesia Remote Sensing Technology and Data Center LAPAN Jakarta Indonesia

In disease risk spatial analysis, many researchers especially in Indonesia are still modelling population density as the ratio of total population to administrative area extent. This model oversimplifies the problem, because it covers large uninhabited areas, while the model should focus on inhabited areas. This study uses settlement mapping against satellite imagery to focus the model and calculate settlement area extent. As far as our search goes, we did not find any specific studies comparing the use of settlement mapping with administrative area to model population density in computing its correlation to a disease case rate. This study investigates the comparison of both models using data on Tuberculosis (TB) case rate in Central and East Java Indonesia. Our study shows that using administrative area density the Spearman’s ρ was considered as "Fair" (0.566, p Copyright © 2024, The Authors. All rights reserved.

关键词： Population statistics

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Construction and Application of Digital Mining 3D Modeling System

Construction and Application of Digital Mining 3D Modeling S...

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International Conference on Smart Applications and Sustainability in the Artificial Intelligence of Things, SAS-AIoT 2024

作者： Zhang, Xueqing Li, Zhiyou Ma, Ling Chongqing Geographic Information and Remote Sensing Application Center Chongqing401147 China Chongqing Safety Science and Technology Research Co. Ltd. Chongqing401331 China Shenzhen Smart City Technology Development Group Co. Ltd. Guangdong Shenzhen518000 China

ISBN: (纸本)9783031782756

The concept of "digital mine" is the deepening and specific embodiment of the concept of "digital earth" in mines. The 3D modeling system for mining is a comprehensive product that integrates mining science, information science, artificial intelligence, and computer technology, as well as digital information, digital production, and intelligent decision-making and processing of digital management. The three-dimensional digital geological model has developed based on the concept of "digital mining" and related technologies. This method combines visualization technology with 3D modeling technology, constructs virtual models through electronic computers, and describes mine data, enabling miners to understand geological data and mine environment from different perspectives based on specific models. The digital mining 3D modeling system is a modern large-scale digital software that integrates digital technology into the software and has strong modeling capabilities, which can meet the 3D geological modeling needs of sediments in mining areas. At the same time, it can also calculate and dynamically manage the mineral reserves of the target mine, design an overall mining construction system, generate various construction progress work charts, and enable mining work to develop towards visualization, intelligence, and digitization, playing a light and heavy role in mining work. The experimental results show that a digitalized mining 3D modeling system can save 77% of labor costs, while computer-aided design can save only 65% of labor. The time cost of a digital mining 3D modeling system is only 3 weeks. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Mine safety

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High - Precision Lunar Mapping in Complex Terrain using CNN and Multi-Source DEM’s

High - Precision Lunar Mapping in Complex Terrain using CNN ...

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remote sensing Symposium (InGARSS), 2020 IEEE India Geoscience and

作者： Mimansa Sinha Sanchita Paul Mili Ghosh Nee Lala Department of Computer Science and Engineering Birla Institute of Technology Mesra India Department of Remote Sensing Birla Institute of Technology Mesra India

ISBN: (数字)9798350390346

ISBN: (纸本)9798350390353

Automated identification and annotation of lunar craters is critical for lunar remote sensing and planetary exploration. This research presents a unique approach for locating craters on the Aristarchus Plateau and Schröter Valley using Terrain Mapping Camera-2 (TMC-2) high-resolution Digital Elevation Model (DEM) data from Chandrayaan-II and prior lunar missions. The model achieves more than 84% precision by combining Mask R-CNN with the ResNet-50 backbone, outperforming traditional approaches substantially. This technique discovers previously unknown craters of diameter at least 0.87 km in the given region, improving geological mapping and planning. These findings directly affect future lunar missions, improving landing site accuracy and making identifying possible resources easier. These applications encourage sustainable exploration and resource management, emphasizing the possible impact on future lunar missions.

关键词： Deep learning Mars Accuracy Geology Moon Planning Convolutional neural networks Resource management Digital elevation models remote sensing

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Augmented reality for supporting geo-spatial planning:An open access review

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Visual Informatics 2023年第4期7卷 1-12页

作者： Reint Jansen Frida Ruiz Mendoza William Hurst Laboratory of Geo-Information Science and Remote Sensing Wageningen University&ResearchThe Netherlands Information Technology Group Wageningen University&ResearchThe Netherlands

Augmented reality is gaining traction across many *** of these is participation within geo-spatial planning *** interactive and three-dimensional nature of augmented reality is suitably placed to cater for a higher quality of communication and information exchange in planning ***,this research provides an overview of the use of AR in planning processes,specifically regarding the participation aspect,through an open-access systematic literature review,for which the investigation identifies 35 articles concerning the current state-of-the-art of augmented reality in *** indicate the rather limited use of augmented reality in the overall planning process due to technical ***,it shows to be a useful technology where it allows for higher user engagement and a clearer understanding among users in planning ***,in participation,the technology offers a motivational solution and creates an overall higher acceptance and awareness of the plan,making the participants more engaged and represented in the planning process.

关键词： Augmented reality Systematic literature review Participation Planning Geo-visualization

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Positioning Improvement for Spaceborne Laser Footprint Based on Precisely Terrain Data

Positioning Improvement for Spaceborne Laser Footprint Based...

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ISPRS Technical Commission I Midterm Symposium on Intelligent sensing and remote sensing Application

作者： Xu, Chaopeng Xie, Junfeng Yang, Xiaomeng Lv, Xin Land Satellite Remote Sensing Application Center Ministry of Natural Resources of China Beijing100048 China College of Geodesy and Geomatics Shandong University of Science and Technology Qingdao266590 China College of Geoscience and Surveying Engineering China University of Mining and Technology－Beijing Beijing100083 China

Spaceborne laser altimetry represents a novel active remote sensing technology applicable to earth observation, which together with imaging spectroscopy and synthetic aperture radar as a core technology for data acquisition in the earth observation systems. However, the accuracy of horizontal positioning for laser footprints from spaceborne laser altimeters declines due to various factors such as the changes in the orbital environment and the deterioration of performance. Moreover, the limited frequency of in-orbit calibration of the spaceborne laser altimeters and the non-disclosure of calibration parameters mean that users are heavily reliant on positioning accuracy of the altimetry data provided. To address this issue, a new algorithm is proposed in this study for enhancing the accuracy of horizontal positioning for laser footprints in the absence of satellite altimeter pointing and ranging parameters. In this algorithm, high-resolution DSM is taken as the reference terrain data to take advantage of the higher precision in elevation over horizontal positioning of the laser footprints. By adjusting the horizontal position of the laser footprint within a small area, the algorithm achieves the optimal alignment of laser elevation data with the reference terrain. Then, the resulting shift in the horizontal position of the laser footprints is referenced to correct their horizontal positioning during that period. Based on the high-accuracy DSM data collected from the Xinjiang autonomous region in China and the data collected by the GF-7 satellite, simulation experiments are performed in this study to analyze and validate the proposed algorithm. According to the experimental results, the horizontal accuracy of the laser footprints improves significantly from 12.56 m to 3.11 m after optimization by the proposed method. With the elimination of 9.45 m horizontal error, accuracy is improved by 75.23%. This method is demonstrated as effective in further optimizing the horizo

关键词： Calibration

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Future prediction of the expansion of built-up areas in batam free trade zone (ftz) using land change modeler

Future prediction of the expansion of built-up areas in bata...

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2021 Joint International Conference on Geospatial Asia-Europe 2021 and GeoAdvances 2021

作者： Fakhira, R. Cahyono, A. Undergraduate Program in Cartography and Remote Sensing Department of Geographic Information Science Faculty of Geography Universitas Gadjah Mada Yogyakarta Indonesia Department of Geographic Information Science Faculty of Geography Universitas Gadjah Mada Yogyakarta Indonesia

The establishment of Batam City as a Free Trade Zone (FTZ) encourages the city's growth, as manifested in massive built-up area expansion. The aim of this paper was to analyze the pattern of built-up area expansion in FTZ Batam in 2035 based on the corresponding pattern from 2000 to 2015. Land Change Modeler (LCM) was the instrument used to determine and analyze land cover changes in 2000-2015, from which future changes or built-up area expansion in 2035 were predicted using the validated 2020 land cover map as reference. The validation test based on the Kappa Index of Agreement yielded 96%. The prediction results showed that, compared with 2020, the built-up area in 2035 would have increased by 31.8% and expanded towards the outskirts of FTZ Batam. This sprawl follows the location of the primary activity centers in the FTZ, as allocated in Presidential Regulation of the Republic of Indonesia No. 87 of 2011. A new expansion is expected to continue into existing open space and extensive untouched forest areas. These research findings provide a concept that can be utilized to formulate certain policies and regional planning in the future. © 2022 International Society for Photogrammetry and remote sensing. All rights reserved.

关键词： remote sensing

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Atmospheric CO2 concentration variability in response to contrasting vegetation ecosystems in Himalayan foothills

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Arabian Journal of Geosciences 2023年第3期16卷 1-13页

作者： Patel, Natvar Pokhariyal, Shweta Kushwaha, Satya Prakash Singh Chauhan, Prakash Dadhwal, Vinay Kumar Indian Institute of Remote Sensing Govt. of India Uttarakhand India Indian Institute of Space Science and Technology Trivandrum India

The study explores the usefulness of infra-red CO2 gas analyzer in capturing diurnal and seasonal variations in atmospheric CO2 over three ecosystems, viz., mixed forest plantation (HFS), deciduous Sal forest (BFS), and sugarcane–wheat cropland (SFS). Half-hourly datasets of CO2 and meteorological parameters collected in the respective study sites were analyzed to depict the diurnal, seasonal, and annual variation in atmospheric CO2. The influence of meteorological variables on atmospheric CO2 concentration was depicted through biplot technique based on principal component analysis. Minimum and maximum CO2 values observed in late-afternoon and pre-dawn period, respectively. Among all the sites under study, SFS exhibited the highest range [438.55 ppm (pre-dawn maximum) – 345.99 ppm (late-afternoon minimum)] of CO2 concentration. Minimum CO2 concentration was observed in monsoon and post-monsoon seasons for HFS/BFS and SFS, respectively. Also, maximum “morning down-drop” was observed in monsoon and post-monsoon season in HFS/BFS and SFS, respectively which can be ascribed to rapid consumption of CO2 concentration due to higher biomass. Highest CO2 concentration was observed in SFS owing to the more anthropogenic emission in terms of biomass burning data obtained through long-term Fire Energetics and Emission Research version 1.0. The peak in normalized difference vegetation Index derived from MODIS satellite across three sites coincides with months of the lowest atmospheric CO2 due to strong photosynthetic activity.

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Precise orbit determination for Tianwen-1 during mapping phase

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Astrodynamics 2024年第3期8卷 471-481页

作者： Shanhong Liu Jing Kong Jianfeng Cao Hao Huang Haijun Man Jianguo Yan Xie Li National Key Laboratory of Science and Technology on Aerospace Flight Dynamics Beijing100094China Beijing Aerospace Control Center Beijing100094China Institute for Frontiers in Astronomy and Astrophysics Bejing Normal UniversityBeijing100875China Astronomy Department Bejing Normal UniversityBeijing100875China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan430079China

The mapping phase is a key stage of the Tianwen-1 orbiter. It has the longest exploration time and gathers abundant radio tracking data via the Chinese deep space network. Thus, it also provides opportunities for radio science research topics such as the Mars gravity field model, ephemeris, and radio occultation experiments. At this stage, the need for imaging takes the highest priority, leading to frequent attitude adjustments for the spacecraft, which presents challenges for Precise Orbit Determination (POD). To improve the accuracy of the spacecraft’s orbit, this study analyzes the effects of arc length, the empirical acceleration, and the solar radiation pressure parameters on POD, considering the limited number of radio tracking observations. For one-day arcs, the POD is not able to adequately account for wheel off-loading and a few unknown forces with limited observations, but reasonable fitting is performed for the wheel off-loading occurring during tracking periods or the gap between two tracking periods. When extending the POD arc to three days, the estimated empirical acceleration can be well-fitted and reflects the aggregation feature, but the solar radiation pressure parameter has little impact on POD results. The root mean square of two-way range-rate residuals after POD is about 0.18-0.35 mm/s;the orbital position accuracy of 60% of the arcs is better than 100 m.

关键词： empirical acceleration mapping phase precise orbit determination(POD) radio science

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Edge Node Cooperation and Resource Sharing in Mobile Edge Computing 15

Edge Node Cooperation and Resource Sharing in Mobile Edge Co...

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15th IEEE International Conference on Wireless Communications and Signal Processing, WCSP 2023

作者： Meng, Anqi Gao, Xiaozheng Huang, Yuting Xu, Zhan Shang, Jiadong Ministry of Education Beijing Information Science and Technology University Key Laboratory of Modern Measurement and Control Technology Beijing China Ministry of Information Industry Beijing Information Science and Technology University Key Laboratory of Information and Communication Systems Beijing China Beijing Institute of Technology School of Information and Electronics Beijing China Beijing Institute of Remote Sensing Equipment Beijing China

ISBN: (纸本)9798350324662

As edge computing undergoes ongoing development propelled by the advancements in Internet of Things and mobile communication technologies, the issue of edge node cooperation and resource sharing needs to be investigated. In this paper, the issue of edge node cooperation and resource sharing is modeled as a two-layer framework. In the lower layer, a heuristic matching algorithm between users and edge nodes is developed, and a resource sharing algorithm among edge nodes in the same coalition is proposed. In the upper layer, a coalition formation algorithm is designed based on the coalition game. Simulation results show that the proposed algorithms reduce the network cost effectively compared with non-cooperative scheme. © 2023 IEEE.

关键词： coalition game mobile edge computing resource sharing

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Investigating Green Tide Drift Mechanisms Across Different Time Scales Through Geostationary Image Data

Investigating Green Tide Drift Mechanisms Across Different T...

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IEEE International Symposium on Geoscience and remote sensing (IGARSS)

作者： Menghao Ji Libo Wang Chengyi Zhao School of Geographical Sciences Nanjing University of Information Science and Technology Nanjing China School of Remote Sensing and Geomatics Engineering Nanjing University of Information Science and Technology Nanjing China

ISBN: (数字)9798350360325

ISBN: (纸本)9798350360332

This study employs the drift velocity of green tide extracted from geostationary image data and dynamic data to analyze the drift characteristics of green tide and explore the driving mechanisms behind their movement in the Yellow Sea of China. The results reveal pronounced spatial variations in the drift of green tide patches with distinct directions of movement across a north-south boundary. In the region south of 34°40'N, the green tide patches move northward, while north of 34°40'N, they drift westward. Additionally, tidal currents predominantly drive the short-term migration of green tide patches, while wind and ocean currents govern the net transport of these patches over longer intervals.

关键词： Geoscience and remote sensing Electron mobility Data mining Tides

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