Results 41 to 50 of about 6,207 (200)

Design of Reliable Remote Communication System Based on BeiDou Satellite [PDF]

open access: yes, 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
core   +1 more source

Precise orbit determination and point positioning using GPS, Glonass, Galileo and BeiDou

open access: yesJournal 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]

open access: yesThe 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
doaj   +1 more source

Research on Modeling Weighted Average Temperature Based on the Machine Learning Algorithms

open access: yesAtmosphere, 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
doaj   +1 more source

Geographically Weighted Flow Cross K-Function for Network-Constrained Flow Data

open access: yesApplied 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

Design of Beidou timing module

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract The Beidou timing module receives the Beidou Satellite Information, calculates the time and positioning information, transmits the time and timing information through various external interfaces, and has the function of short message forwarding. This paper presents a system design scheme for the Beidou time-keeping module, which
openaire   +1 more source

Operationalizing the Metaverse for Urban Sustainability: Evidence From an Expert Panel and the Seoul Metaverse City Case Study

open access: yesSustainable 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

Instantaneous BeiDou–GPS attitude determination: A performance analysis

open access: yes, 2014
The advent of modernized and new global navigation satellite systems (GNSS) has enhanced the availability of satellite based positioning, navigation, and timing (PNT) solutions.
Nandakumaran Nadarajah (20056827)   +2 more
core   +2 more sources

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

open access: yesPerspectives 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

IGS-MGEX: Preparing the Ground for Multi-Constellation GNSS Science [PDF]

open access: yes, 2013
With a total of four new and emerging constellations (BeiDou, Galileo, QZSS, IRN SS) as well as the ongoing modernization of GPS and GLONASS the world of satellite navigation presently experiences dramatic changes.
Langley, Richard   +6 more
core  

Home - About - Disclaimer - Privacy