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- 摘要
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Operational Agricultural Flood Monitoring with Sentinel-1 Synthetic Aperture Radar
摘要： Agricultural flood monitoring is important for food security and economic stability. Synthetic Aperture Radar (SAR) has the advantage over optical data by operating at wavelengths not impeded by cloud cover or a lack of illumination. This characteristic makes SAR a potential alternative to optical sensors for agricultural flood monitoring during disasters. The purpose of this study is to assess the effectiveness of using freely available Copernicus Sentinel-1 SAR data for operational agricultural flood monitoring in the United States (U.S.). The operational detection of flood inundation was tested during Hurricane Harvey in 2017, which resulted in significant flooding over Texas and Louisiana, U.S. This paper presents 1) the agricultural flood monitoring method that utilizes Sentinel-1 SAR, the NASS 2016 Cultivated Layer, and the NASS 2016 and 2017 Cropland Data Layers; 2) flood detection validation results and 3) inundated cropland and pasture acreage estimates. The study shows that Sentinel-1 SAR is an effective and valuable data source for operational disaster assessment of agriculture.
关键词： Hurricane Harvey,Flood Detection,Synthetic Aperture Radar,Agriculture Flood Monitoring,Sentinel-1
更新于2025-09-23 15:22:29
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Application of the GF Satellite Data in Flood Disaster Monitoring
摘要： This article gives a detailed description of the High-resolution Earth Observation System, which is currently being carried out in China. The GF data have been successfully launched and their characteristics in flood disaster monitoring are analyzed. Followed by the introduction of the remote monitoring system of flood disaster has been completed. At last some examples of flood disaster monitoring in recent years based on the GF data are introduced.
关键词： GF data,the flood disaster monitoring
更新于2025-09-23 15:22:29
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[IEEE 2018 Eleventh International Conference "Management of large-scale system development" (MLSD 2018) - Moscow (2018.10.1-2018.10.3)] 2018 Eleventh International Conference "Management of large-scale system development" (MLSD - Portable Devices for Monitoring Ultraviolet Radiation
摘要： The article deals with issues related to the use of the new elemental base in some control and monitoring systems for the principles of large-scale objects, constructing portable devices for monitoring ultraviolet radiation. These are the semiconductor sensors - a doser that gives a quantitative result on a digital indicator, either delivering a light or sound signal when reaching a predetermined radiation dose and a dosimeter that measures the intensity of UV radiation or the dose received in real physical units of measurement.
关键词： UV radiation,control systems,sensor,large-scale objects,semiconductor,monitoring,portable device
更新于2025-09-23 15:22:29
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[IEEE 2018 IEEE 13th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS) - Singapore, Singapore (2018.4.22-2018.4.26)] 2018 IEEE 13th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS) - Self-Powered, High-Sensitive Human Cutaneous Activities Sensor
摘要： A self-powered piezoelectric sensor based on lead-free (K,Na)NbO3 (KNN) thin film for human health monitoring is presented. The sensor is fabricated on a flexible substrate and exhibits high sensitivity and stability. It can detect various physiological signals such as pulse, respiration, and body movement. The results demonstrate its potential for wearable health monitoring applications.
关键词： piezoelectric sensor,KNN thin film,health monitoring,lead-free,flexible substrate,wearable
更新于2025-09-23 15:22:29
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[IEEE 2018 OCEANS - MTS/IEEE Kobe Techno-Ocean (OTO) - Kobe, Japan (2018.5.28-2018.5.31)] 2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO) - Monitoring and Communication System Design for A Deep-Sea Unmanned Submersible
摘要： Underwater vehicle is an important equipment for ocean monitoring and exploitation, and has been attracting more researchers and practitioners. Deep-sea unmanned submersible is a special type of underwater vehicle. This paper designs the monitoring and communication system for a deep-sea unmanned submersible using LABVIEW. The monitoring system includes initialization interface module, state display module and remote intervene module. The communication system consists of WIFI communication module, iridium communication module, underwater acoustic communication, and communication protocol between the monitoring computer on the surface ship and the submersible. The designed monitoring and communication system will be very helpful for operating the submersible in a safe and efficient way.
关键词： monitoring,LABVIEW,underwater acoustic communication,deep-sea unmanned submersible
更新于2025-09-23 15:22:29
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[IEEE 2018 IEEE 3rd International Conference on Signal and Image Processing (ICSIP) - Shenzhen, China (2018.7.13-2018.7.15)] 2018 IEEE 3rd International Conference on Signal and Image Processing (ICSIP) - Image Correction Technology Supporting Power Device Monitoring
摘要： An automatically monitoring method of electrical device is proposed in this paper. Various visualization monitoring systems are built to save maintenance costs and improve operation efficiency. Limited to the working principle of ordinary camera lens, obtained image is easy to produce image deformity and aberration. In order to solve this problem, an image correction method based on phase-only correlation (POC) in power industry is suggested to get the image information of the actual situation of device. Experimental results show that proposed method can effectively save testing cost and achieve a high correction accuracy of device image.
关键词： Device monitoring,Image distortion,Image correction,Phase-only correlation
更新于2025-09-23 15:22:29
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Effects of low-temperature sintering on surface morphology and electrical performance of silver nanoparticle/carbon nanotube composite films
摘要： Silver nanoparticle (AgNP)/carbon nanotube (CNT) composites are drawing increasing attention for several applications, especially where transparency is required. However, interfacial interaction and stability of the AgNP/CNT composites have been scarcely investigated. In the present study, transparent coatings were prepared from dispersed AgNP-coated multiwalled CNTs and exposed to different annealing conditions. The changes in surface morphology and evolution of interfacial configuration of AgNP-decorated CNT transparent composite films were investigated. Under certain conditions, CNT ropes were glued to one another by the melted AgNP aggregates, resulting in the improvement of the measured electrical properties. The in situ measurements of the electrical properties allowed correlating the AgNPs sintering mechanism with the morphological observations. Notably, at a given temperature, increasing the initial film density increased the time necessary to complete the AgNPs sintering. The obtained results show that the electrical resistance can be used as a tool to indirectly monitor the network state of transparent AgNP-decorated CNT composite films, hence paving the way to tuning the composite film properties with a high precision for the desired application. These findings also explain the mechanism of reinforcement of polymer nanocomposites by the current nanofillers.
关键词： A. Silver nanoparticle,B. Carbon nanotube,E. In situ monitoring,D. Sintering,F. Electrical properties,C. Nanocomposite
更新于2025-09-23 15:22:29
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Fiber Optic Sensors Based on Photoacoustic Effect for Rebar Corrosion Measurement
摘要： An all-optical ultrasound sensing system based on photoacoustic principle is developed to monitor and investigate the initiation of early stage steel rebar corrosion in real time. The ultrasound generator was developed by small size gold nanocomposites coated optical fibers to generate 8-MHz bandwidth signals. The ultrasound receiver was applied by a fiber Bragg grating sensor. This system was employed for the first time as a disruptive approach in order to replace the application of conventional electrical-based sensors due to their unique advantages including miniature size, lightweight, immunity to electromagnetic interference, resistance to corrosion, and distributed sensing capability. Accelerated corrosion tests were conducted on steel rebars to validate the developed sensing system. The obtained results indicated that the mass loss of corroded steel rebars was characterized by the centroid frequency shift of measured ultrasound signals. The correlation between the centroid frequency shift and the mass loss depicted an exponential relationship.
关键词： photoacoustic (PA) principle,fiber optic sensor (FOS),frequency shift,Corrosion monitoring
更新于2025-09-23 15:22:29
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Clear-Air Anomaly Detection Using Modified Kalman Temporal Filter from Geostationary Multispectral Data
摘要： A multispectral temporal-based remote sensing technique based on a modified Kalman filter is presented for clear-air detection by using Geostationary visible-infrared radiometric passive measurements. The Kalman estimate relies on a model of the daily measurement cycle of the considered pixel in clear-sky conditions. If the measurement significantly deviates from the predicted value, an anomaly is detected, which is interpreted as a non-clear air scenario. The add-on value of such approach is to be able to provide a-priori estimates, making the algorithm applicable in a global way. The Meteosat Second Generation satellite has been used over a large sample area in West Africa and a test period of three months. An inter-comparison with respect to the EUMETSAT cloud mask product has been carried out showing promising results in terms of detecting clear-air scenarios and percentages of matching around 90% over the entire period.
关键词： Geostationary Visible-Infrared satellite measurements,clear-air detection,Kalman filtering,environmental monitoring,Global-scale analysis
更新于2025-09-23 15:22:29
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[IEEE 2018 17th International Conference on Ground Penetrating Radar (GPR) - Rapperswil (2018.6.18-2018.6.21)] 2018 17th International Conference on Ground Penetrating Radar (GPR) - Groundwater table level changes based on ground penetrating radar images: a case study
摘要： A ground penetrating radar has been used to estimate the depth of groundwater table. The GPR measurements were conducted on esker deposits along the same profile and repeated five times during the year in autumn, spring, two times in summer and again in autumn. A shielded transmitting antenna with a nominal frequency of 250 MHz was used during the surveys. The accuracy of ground penetrating radar measurements to estimate the depth of groundwater occurrence is discussed in this paper. The results of estimation of groundwater table from GPR is compared with the level of groundwater table measured in piezometer.
关键词： ground penetrating radar (GPR),groundwater table,monitoring
更新于2025-09-23 15:22:29