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501
A Convex Approach for Trajectory Optimization of Super-Synchronous-Transfer-Orbit Large Launch Systems with Time-Position Constraints
Published 2022-01-01“…The payload of SSTO launch systems is typically a geostationary equatorial orbit (GEO) satellite, and the time and position of orbital injection are constrained, which is quite different from the case of general satellites. …”
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502
Numerical Modeling the Flood and Pollutant Transport Processes in Residential Areas with Different Land Use Types
Published 2022-01-01“…We use remote sensing techniques to acquire the land coverage in the area of HTL based on Landsat TM satellites. The impacts of changed land use on mitigation of flooding waves and pollutant spread are investigated; the results indicate that the land cover changes have an obvious influence on the evolution process of flood waves and pollutant transport in the study areas, where the transport of pollutants is very dynamic during flood inundation in HTL area. …”
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503
Mitigation of Diffraction Effect in GNSS Positioning Considering Azimuth and PDOP in Canyon Environment
Published 2025-01-01“…Global navigation satellite system (GNSS) monitoring stations established in canyon environments inevitably face challenges such as multipath effects, diffracted signals, and non-line-of-sight (NLOS) reception due to obstructions. …”
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504
Overview on Radiation Damage Effects and Protection Techniques in Microelectronic Devices
Published 2024-01-01“…With the rapid advancement of information technology, microelectronic devices have found widespread applications in critical sectors such as nuclear power plants, aerospace equipment, and satellites. However, these devices are frequently exposed to diverse radiation environments, presenting significant challenges in mitigating radiation-induced damage. …”
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505
Research on Fusing Multisatellite Soil Moisture Data Based on Bayesian Model Averaging
Published 2018-01-01“…There are many ways to measure SM, satellite microwave remote sensing is now considered the primary method because it can provide real-time high-resolution data. …”
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506
Space-Air-Ground Integrated Network for Disaster Management: Systematic Literature Review
Published 2023-01-01“…One effective approach is to use satellites in conjunction with existing air-to-ground systems. …”
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507
Cost-Efficient LEO Navigation Augmentation Constellation Design under a Constrained Deployment Approach
Published 2021-01-01“…The advantages of the Low Earth Orbit (LEO) satellite include low-latency communications, shorter positioning time, higher positioning accuracy, and lower launching, building, and maintenance costs. …”
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508
Tightly combined triple-frequency GPS and BDS for rapid wide-lane RTK positioning with consideration of carrier-phase differential inter-system bias
Published 2021-03-01“…Due to the influence of different frequencies between GPS and BDS, the double-difference wide-lane ambiguity between GPS and BDS reference satellites and the single-difference ambiguity of the BDS reference satellite are estimated jointly with the wide-lane differential inter-system bias. …”
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509
A Note on the Use of Generalized Sundman Anomalies in the Numerical Integration of the Elliptical Orbital Motion
Published 2014-01-01“…The orbital motion around a central body is an interesting problem that involves the theory of artificial satellites and the planetary theories in the solar system. …”
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510
Data Analysis and Results of the Radiation-Tolerant Collaborative Computer On-Board OPTOS CubeSat
Published 2019-01-01“…This computer, named OPTOS, provides enhanced computational capacities with respect to what computers of other small satellites typically provide. To maintain the reliability needed to perform typical critical activities such as real-time maintenance or current surveillance, authors have conceived a set of collaborative hardening techniques, taking advantage of the distributed architecture of the OPTOS On-Board Computer. …”
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511
Evaluation of Calibration Method for Field Application of UAV-Based Soil Water Content Prediction Equation
Published 2019-01-01“…Because UAVs have higher spatial and temporal resolution than satellites, they are currently becoming more useful in remote sensing areas. …”
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512
Study on Glass-Epoxy-Based Low-Cost and Compact Tip-Truncated Triangular Printed Antenna
Published 2012-01-01“…The proposed printed antennas are suitable for communication links between ships or buoys and satellites specially for navigation purpose.…”
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513
Design of Modular Power Management and Attitude Control Subsystems for a Microsatellite
Published 2018-01-01“…The Electric Power System (EPS) and attitude control system (ACS) are the essential components of any satellite. EPS and ACS efficiency and compactness are substantial for the proper operation and performance of the satellite’s entire mission life. …”
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514
Global Warming: The Balance of Evidence and Its Policy Implications
Published 2003-01-01“…Of particular interest are advances that seem to explain why satellites do not see as much warming as surface instruments, how we are getting a good idea of recent paleoclimates, and why the 20th century temperature record was so complex. …”
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515
The Three-Dimensional Structure of Transatlantic African Dust Transport: A New Perspective from CALIPSO LIDAR Measurements
Published 2012-01-01“…We analyzed over two years of LIDAR measurements from NASA’s CALIPSO and CloudSat satellites to document the vertical pathways of transatlantic transport of Saharan dust. …”
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516
CM SAF Oransal Bulut Kapalılığı (CFC) Verisinin Başarımı ve Doğu Anadolu Gözlemevi (DAG) Yerleşkesi için Analizi
Published 2021-09-01“…EUMETSAT’ın (European Organisation for the Exploitation of Meteorological Satellites; Avrupa Birliği Meteorolojik Uydu İşletme Teşkilatı) denetim ve koordinasyonunda olan CM SAF (Satellite Application Facility on Climate Monitoring; İklim Yönetimi Üzerine Uydu Uygulama Birimi), METEOSAT verilerinden iklimsel çalışmalar için atmosferimize ait çeşitli veri setleri üretmektedir. …”
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517
Combining of the H/A/Alpha and Freeman–Durden Polarization Decomposition Methods for Soil Moisture Retrieval from Full-Polarization Radarsat-2 Data
Published 2018-01-01“…As crops grow, the associated vegetation seriously affects the ability of satellites to retrieve SM data. Here, we collected such data at different growth stages of maize using Bragg and X-Bragg scattering models based on the Freeman–Durden polarization decomposition method. …”
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518
Spectral enhancement of PlanetScope using Sentinel-2 images to estimate soybean yield and seed composition
Published 2024-07-01“…Capturing phenological developments that influence seed composition requires frequent satellite observations at higher spatial and spectral resolutions. …”
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519
U.S. plans to internationalize the containment of the USSR in the Balkans in the first half of the 1950s
Published 2020-12-01“…In the Balkans, the Americans were mostly afraid of the aggression of Soviet “satellites” against Greece and Yugoslavia. In response, in the early 1950s the United States formed a new security model in the Balkans, which based on a differentiated approach: Greece became a member of NATO, while Yugoslavia entered the anti-Soviet Balkan Pact affiliated with NATO. …”
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520
Changes of Soil Moisture from Multiple Sources during 1988–2010 in the Yellow River Basin, China
Published 2018-01-01“…The spatiotemporal variations of soil moisture from multiple sources during 1988–2010 are evaluated against in situ observations in the Yellow River basin, China, including the Essential Climate Variable satellite’s passive microwave product (SMECV), ERA-Interim reanalysis (SMERA), the National Centers for Environmental Prediction/Department of Energy’s Reanalysis-2 (SMNCEP), and the Variable Infiltration Capacity model products (SMVIC). …”
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