Results 41 to 50 of about 5,771 (200)
Precise orbit determination and point positioning using GPS, Glonass, Galileo and BeiDou
Journal of Geodetic Science, 2014 State of the art Precise Point Positioning (PPP) is currently based on dual-frequency processing of GPS and Glonass navigation systems. The International GNSS Service (IGS) is routinely providing the most accurate orbit and clock products for these ...
Tegedor J., Øvstedal O., Vigen E.
doaj +1 more source
ANALYSIS OF URBAN FOREST CARBON SEQUESTRATION CAPACITY: A CASE STUDY OF ZENGDU, SUIZHOU [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Carbon-fixing and oxygen-releasing is an important content of forest ecosystem serving in city. Analysis of forest ecosystem carbon sequestration capacity can provide scientific reference for urban forest management strategies.
X. Yu, H. Wang, W. Cai, Y. Han
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Research on Modeling Weighted Average Temperature Based on the Machine Learning Algorithms
Atmosphere, 2023 In response to the nonlinear fitting difficulty of the traditional weighted average temperature (Tm) modeling, this paper proposed four machine learning (ML)-based Tm models.
Kai Li +5 more
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Geographically Weighted Flow Cross K-Function for Network-Constrained Flow Data
Applied Sciences, 2022 Network-constrained spatial flows are usually used to describe movements between two spatial places on a road network. The analysis of the spatial associations between different types of network-constrained spatial flows plays a key role in understanding
Weijie Zhang +4 more
doaj +1 more source
ARAIM for Vertical Guidance Using GPS and BeiDou [PDF]
, 2013 An advanced Receiver Autonomous Integrity Monitoring (ARAIM) approach is investigated when augmenting GPS satellites with the current regional BeiDou constellation.
Ahmed El-Mowafy (9557050)
core +2 more sources
Wide area kinematic positioning with BeiDou triple frequency signals
, 2016 A key challenge of wide area kinematic positioning is to overcome the effects of the varying hardware biases in code signals of the BeiDou system. Based on three geometryfree/ionosphere-free combinations, the elevation-dependent code biases are modelled ...
Yanming Feng +7 more
core +1 more source
Sustainable Development, EarlyView.ABSTRACT Smart cities and urban digital twins have fostered the emergence of immersive environments, such as the metaverse. While contemporary scholarlship has increasingly examined the integration of the metaverse within smart city infrastructures, the critical nexus between urban sustainability and the metaverse remains largely under‐researched. This
Jose Manuel Diaz‐Sarachaga +1 more
wiley +1 more source
Design of Reliable Remote Communication System Based on BeiDou Satellite [PDF]
, 2017 To construct moderate remote data transmission systems,reliable remote transmission system based on BeiDou short-message protocol is designed and implemented.
YAN Xiaoxing,CHE Ming,GAO Xiaojuan
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Deep Learning Based Detector YOLOv5 for Identifying Insect Pests
Applied Sciences, 2022 Insect pests are a major element influencing agricultural production. According to the Food and Agriculture Organization (FAO), an estimated 20–40% of pest damage occurs each year, which reduces global production and becomes a major challenge to crop ...
Iftikhar Ahmad +7 more
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Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki +5 more
wiley +1 more source