Results 91 to 100 of about 6,207 (200)

PRELIMINARY ANALYSES OF BEIDOU SIGNAL-IN-SPACE ANOMALY SINCE 2013 [PDF]

open access: yes, 2016
As BeiDou navigation system has been operational since December 2012. There is an increasing desire to use multiple constellation to improve positioning performance. The signal-in-space (SIS) anomaly caused by the ground control and the space vehicle is
J. Ren, Y. Wu, W. Liu
core   +1 more source

Analisis Ketelitian Spasial Menggunakan Satelit Beidou Untuk Pengukuran Bidang Dengan Metode Rtk [PDF]

open access: yes, 2016
At the moment a method of the determination of position by using signals satellite growing rapidly with the arrival of satellite Beidou .The determination of position can be used to measurement of the field of land will use in land registration.
Aulia, F. (Fathan)   +2 more
core  

Performance Analysis of Application Layer FEC to Disaster Warning Distribution Based on COMPASS/Beidou

open access: yes, 2011
The COMPASS/Beidou Satellite Navigation System is no-blind zone for China and limited transmission capacity. It is critical for increasing the performance of disaster warning distribution by the COMPASS/Beidou system.
Rui Xue   +3 more
core   +1 more source

Performance of Ground-Based Global Navigation Satellite System Precipitable Water Vapor Retrieval in Beijing with the BeiDou B2b Service

open access: yesRemote Sensing
The accurate measurement of water vapor is essential for research about and the applications of meteorology, climatology, and hydrology. Based on the BeiDou PPP-B2b service, real-time precipitable water vapor (PWV) can be retrieved with the precise point
Yunchang Cao   +5 more
doaj   +1 more source

Architecture design of BeiDou global navigation signals

open access: yesGeo-spatial Information Science
Navigation signals play a crucial role in determining the performance and user experience of Global Navigation Satellite System (GNSS). In recent years, GNSSs have been actively modernizing their signal architectures to meet the increasing demand for high precision, robustness, specialization, and internationalization services.
Shuren Guo, Chengeng Su, Feiren Lv
openaire   +2 more sources

Attention-Enhanced MinkUNet for Label-Efficient Segmentation of Transmission Line LiDAR Point Clouds

open access: yesApplied Sciences
Routine inspections of transmission lines are essential for maintaining the reliability of the power grid. Airborne LiDAR technology provides detailed 3D corridor data for automated hazard detection, such as vegetation encroachment and structural ...
Yijiang Wu, Jianfeng Huang, Yuxuan Lei
doaj   +1 more source

En kvalitetsundersøkelse av GNSS-systemene Galileo og BeiDou

open access: yes, 2019
Denne oppgaven gir et innblikk i de to nye GNSS-systemene, Galileo og BeiDou, som i undersøkelsesperioden ikke var fullt operative. Vi skal se at de er bygd opp noe ulikt i forhold til det vi allerede kjenner til, GPS og GLONASS.
Halle, Ole Jørgen
core  

Jamming Effect Analysis of Two Chinese GNSS BeiDou-II Civil Signals [PDF]

open access: yes, 2012
Threats of electronic warfare, especially to global positioning systems (GPSs), have been rapidly increasing. The development of the Chinese navigation satellite system BeiDou has been extended to a global navigation satellite system (GNSS).
Yoo, Seungsoo   +2 more
core  

Design and performances of laser retro-reflector arrays for Beidou navigation satellites and SLR observations

open access: yes, 2014
Beidou is the regional satellite navigation system in China, consisting of three kinds of orbiting satellites, MEO, GEO and IGSO, with the orbital altitudes of 21500-36000 kin.
Wang, Yuan-Ming   +8 more
core  

Design of double band Beidou navigation antenna with wide axial ratio beam

open access: yesZhongguo Jianchuan Yanjiu
ObjectivesIn order to effectively broaden the beam width of the 3 dB axis ratio of a Beidou antenna, this paper proposes a slotted laminated microstrip patch antenna loaded with parasitic elements.
Zhuolin DENG   +3 more
doaj   +1 more source

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