Results 211 to 220 of about 12,241 (271)

BeiDou/Compass und IRNSS

2009
Dieses Kapitel umfasst die zugangliche Information zum Satellitennavigationssystem BeiDou/Compass der Volksrepublik China. Die Dienste werden beschrieben, die Bahnen der Satelliten (GEO und MEO) und die verwendeten Funkfrequenzen (L-Band) werden genannt, die Vorzuge und Einschrankungen des Systems diskutiert und die Einsatzmoglichkeiten des Systems in ...
Hans Dodel, Dieter Häupler
openaire   +1 more source

BeiDou Time Transfer With the Standard CGGTTS

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016
The R2CGGTTS software tool developed at the Royal Observatory of Belgium (ROB) to provide clock solutions in the standard Common GNSS Generic Time Transfer Standard (CGGTTS) has been extended to BeiDou Navigation Satellite System (BDS). The BDS includes satellites in three different orbits: 1) Medium Earth Orbit (MEO); 2) Inclined Geosynchronous ...
Wei, Huang, Pascale, Defraigne
openaire   +2 more sources

A Novel BeiDou Satellite Transmission Framework With Missing Package Imputation Applied to Smart Ships

IEEE Sensors Journal, 2022
Obtaining voyage data through a vessel monitoring system (VMS) and transmitting it to a remote monitoring center through satellites is an important link to realize the information perception of smart ships.
Sheng Liu, Di Wu, Hongfang Sun, Lanyong Zhang   +3 more
semanticscholar   +1 more source

Combined BeiDou-2 and BeiDou-3 instantaneous RTK positioning: stochastic modeling and positioning performance assessment

Journal of Spatial Science, 2019
The global BeiDou navigation satellite system (BDS-3) has been in operation recently and many related applications have been already compatible with BDS-3 satellites.
Weikai Miao, Bofeng Li, Zhiteng Zhang, Xuewen Zhang   +3 more
openaire   +1 more source

Distributed Timekeeping in BeiDou Inter-Satellite Link Network

IEEE Communications Letters, 2022
Equipped with inter-satellite links (ISLs), BeiDou-3 satellites are able to operate autonomously in case of ground facility malfunction. To provide reliable positioning, navigation and timing service during autonomous operation, satellites need to ...
Suyang Liu, Xiye Guo, Jun Lai, Jun Yang
semanticscholar   +1 more source

Discussions of a2-Drift Variations of BeiDou-3 Satellite Rubidium Atomic Clocks

IEEE Transactions on Instrumentation and Measurement, 2022
Slow and significant stochastic variations named “a2-drift” variations are observed in this contribution, which are discovered during the estimation of frequency aging of BeiDou-3 rubidium (Rb) clocks. The magnitude of the variations suffered on BeiDou-3
Yuexin Ma, Chengpan Tang, Xiaogong Hu, Zhiqiao Chang, Yufei Yang, Jianhua Yang   +5 more
semanticscholar   +1 more source

BeiDou integrated disaster reduction application platform

China Communications, 2015
To better improve the emergency communication and location-based services of disaster information reporting network for serious natural disaster emergency response and relief, the national natural disaster reduction application platform based on BeiDou navigation satellite system is constructed.
Xuefeng Lu, Yongfeng Liao, Bo Li, Lan Deng   +3 more
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The BeiDou navigation satellite system

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014
The BeiDou Navigation Satellite System (BDS) is a global navigation satellite system to be developed independently by China. It will provide positioning, navigation, and timing services with a global coverage by 2020. It can be used for transport, weather forecast, fishing, forestry, telecommunications, hydrological monitoring, and mapping. The service
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A Compact Dual-Band Stacked Patch Antenna With Dual Circular Polarizations for BeiDou Navigation Satellite Systems

IEEE Antennas and Wireless Propagation Letters, 2019
A compact dual-band and dual-circular polarization (CP) stacked patch antenna is investigated for BeiDou navigation satellite system. The proposed antenna employs a single coaxial probe to feed two layers of patches simultaneously, realizing dual-band ...
Hongcai Yang, Yi Fan, Xiongying Liu
semanticscholar   +1 more source

Channel Characterization for Beidou Satellite Communications

2016
With the continuous promotion of Beidou satellite navigation applications, improving the navigation terminal performance is a hot issue under city environment because of its wide application and complex signal propagation. Based on received Beidou satellite signal power shadowing under different environments in city application, the paper proposed a ...
Xiaoxi Jin, Rendong Ying, Peilin Liu
openaire   +1 more source