-
1581
3‐D Regional Ionosphere Imaging and SED Reconstruction With a New TEC‐Based Ionospheric Data Assimilation System (TIDAS)
Published 2022-04-01“…Abstract A new TEC‐based ionospheric data assimilation system (TIDAS) over the continental US and adjacent area (20°–60°N, 60°–130°W, and 100–600 km) has been developed through assimilating heterogeneous ionospheric data, including dense ground‐based Global Navigation Satellite System (GNSS) Total Electron Content (TEC) from 2,000+ receivers, Constellation Observing System for Meteorology, Ionosphere, and Climate radio occultation data, JASON satellite altimeter TEC, and Millstone Hill incoherent scatter radar measurements. …”
Get full text
Article -
1582
The Consequences of Mining Damage and their Impact on the Natural Environment – a Case Study of Trzebinia
Published 2024-12-01“…Methodology: The article uses theoretical and practical research methods, including the analysis of a report on satellite methods, which was developed on the basis of data from satellite radar interferometry. …”
Get full text
Article -
1583
Harnessing Multi-Source Data and Deep Learning for High-Resolution Land Surface Temperature Gap-Filling Supporting Climate Change Adaptation Activities
Published 2025-01-01“…Our approach addresses common challenges in satellite-derived LST data, such as gaps caused by cloud cover, image border limitations, grid-pattern sensor artifacts, and temporal discontinuities due to infrequent sensor overpasses. …”
Get full text
Article -
1584
Supporting Smart Manufacturing in the Space Industry: A Case Study
Published 2025-01-01“…ABSTRACT In the era of Industry 4.0, the New Space Economy, often called Space 4.0, has taken center stage in the satellite industry. The advent of mega‐constellations, which entails mass satellite production, necessitates state‐of‐the‐art manufacturing methods. …”
Get full text
Article -
1585
Identification and Analysis on Surface Deformation in the Urban Area of Nanchang Based on PS-InSAR Method
Published 2025-01-01“…This study utilized Sentinel-1 satellite data, acquired between September 2018 and May 2023, and applied the Permanent Scatterer Interferometric Synthetic Aperture Radar (PS-InSAR) technique to monitor surface deformation in Nanchang’s urban area. …”
Get full text
Article -
1586
Performance Analysis of a Strong Constraint 4DVar and 4DEnVar on Regional Ionosphere Imaging
Published 2023-12-01“…Preliminary assimilation is performed only with ubiquitous Global Navigation Satellite System observables from ground‐based receivers, with a focus on moderately stable mid‐latitudes, specifically the Japanese archipelago and neighboring areas. …”
Get full text
Article -
1587
Method and Validation of Real‐Time Global Ionosphere Modeling Constraint by Multi‐Source GNSS/LEO Data
Published 2024-04-01“…The PPP‐Fixed method is also used to derive ionospheric data for post‐processed GIM generation, named SGG Post‐GIM, combined with low earth orbit satellite data. The obtained hardware delays are applied to revise real‐time ionospheric data. …”
Get full text
Article -
1588
Vegetation optical depth as a key predictor for fire risk escalation
Published 2025-05-01“…Excluding direct consideration of vegetation dynamics reduces the accuracy in fire risk estimation. Satellite retrievals of vegetation dynamics can enhance the fire risk prediction when used as indicators of fuel water status and fuel load. …”
Get full text
Article -
1589
-
1590
-
1591
-
1592
Anisotropic Elastoplastic Damage Mechanics Method to Predict Fatigue Life of the Structure
Published 2016-01-01“…The fatigue crack propagation life of satellite structure is predicted using the present method and the computational results comply with the experimental data very well.…”
Get full text
Article -
1593
Design and Implementation of Global Flight Tracking System Based on Space-Based Network
Published 2020-12-01“…Based on the analysis of the application scenarios and requirements of the global fl ight tracking of space-based network, aim at the application characteristics of the satellite network in the field of civil aviation, the overall system and subsystem preliminary design, key technology analysis, business focus and difficulty analysis were carried out, the global flight tracking prototype system construction and test verifi cation was completed.The results showed that the system is stable and reliable, the fl ight path is complete, and meets the requirements of 4D/15 fl ight tracking and surveillance.The future application in the industry will play an important role in improving the aviation security system, and ensuring the information and data security of civil aviation.…”
Get full text
Article -
1594
On-Board Switching for Space-Integrated-Ground Information Network: Progress and Trends
Published 2021-06-01“…Considering the requirements of the space-integrated-ground information network, the technologies of on-board channelized switching and the technologies of on-board packet switching were surveyed.Among, the discussed channelized switching technologies include fl exible digital channelized switching and microwave photonic frequency conversion and switching, while the discussed packet switching technologies mainly include software-defi ned satellite network.Considering the future research directions of space networking and switching, the trends of on-board switching were discussed in terms of system capacity, reliability, effi ciency, and quality of service, which provided a reference for the long-term planning of the space-integrated-ground information network.…”
Get full text
Article -
1595
Emulation platform for inter-domain protocols validation of integrated space-terrestrial network
Published 2019-05-01“…The inter-domain routing protocol is a key factor in the rapid integration of various satellite systems and heterogeneous networks in integrated space-terrestrial network (ISTN).However,the wide difference between network topologies of space and terrestrial networks may present significant challenges to the deployment of existing inter-domain protocols.To test the performance of these protocols,an emulation platform for ISTN was designed to efficiently emulate the dynamic and large-scale space network and the existing terrestrial networks using virtual network technology.Extensive experiments demonstrate that,with the expansion of the scale of space network and the scale of terrestrial Internet’s routing table,the integration efficiency between space and terrestrial networks becomes very low.…”
Get full text
Article -
1596
Discussion on the common sense of the Internet of things
Published 2020-12-01“…The development of Internet of things (IoT) in China is in the second decade.First of all,the outcome of the IoT was reviewed.The industry formation and system structure of IoT were introduced.Then,the development process,trends and key points of the next generation of IoT were summarized in the aspect of the service platform,sensor industry,access links and fusion with technologies such as cloud computing,edge computing,big data,identity resolution,blockchain,satellite navigation system,5G and so on.Finally,the problems and possible ideas of the development of IoT in China were put forward in the fields of the application positioning,theoretical research,standard-setting and security.Hope to provide reference for colleagues to understand the IoT.…”
Get full text
Article -
1597
Study on the matching scheme between early warning information dissemination demands and communication network dissemination channels
Published 2022-05-01“…Early warning information dissemination capacity is insufficient in timeliness, accuracy and wide coverage compared with the national emergency management system requirements.The dissemination demands were analyzed from early warning information receivers, emergency degree, receiving area and other factors.The early warning information transmission channels were extended to including cell broadcasting, Tiantong satellite and other communication networks.Then these channels were compared in the aspects of timeliness, accuracy, coverage and cost.For emergency responders and the public, according to typical scenarios, the matching scheme of early warning information communication channel selection was proposed, which laid a foundation for the optimization of communication channel.…”
Get full text
Article -
1598
A Study on Coastline Extraction and Its Trend Based on Remote Sensing Image Data Mining
Published 2013-01-01“…These results show that it is an effective method for carrying out the pretreatment of low-precision remote sensing images by multisource image matching algorithm with SIFT operator, geometric correction on satellite images at scarce control points, and other techniques; the result of the coastline extracted by the edge detection method based on a chromatic aberration Canny operator has a height coincident with the actual measured result; we found that the coastline length of China is predicted to increase in the future by using the grey prediction method, with the total length reaching up to 19,471,983 m by 2015.…”
Get full text
Article -
1599
Recent Advances in Near-Field to Far-Field Transformation Techniques
Published 2012-01-01Get full text
Article -
1600
Reliability Analysis of Electronic Equipment Subjected to Shock and Vibration – A Review
Published 2009-01-01Get full text
Article