Results 121 to 130 of about 51,700 (277)

Multipath mitigation technique under strong multipath environment using multiple antennas [PDF]

open access: yes, 2017
2016-2017 > Academic research: refereed > Publication in refereed journal201804_a bcmaVersion of ...
Amai, O, Hsu, LT, Kobayashi, K, Kubo, N
core   +1 more source

Validation of the Accuracy and Convergence Time of Real Time Kinematic Results Using a Single Galileo Navigation System

open access: yesSensors, 2018
For the last two decades, the American GPS and Russian GLONASS were the basic systems used in global positioning and navigation. In recent years, there has been significant progress in the development of positioning systems.
Zbigniew Siejka
doaj   +1 more source

A Novel Power Inversion Antenna Array for the Beidou Navigation Satellite System

open access: yesIEEE Access, 2019
Power inversion (PI) arrays have been employed to suppress interference in satellite navigation systems. When the incident direction of a satellite signal is near that of the interference, there will be a significant degradation in the signal to noise ...
Yiheng Jin   +4 more
semanticscholar   +1 more source

Sensitivity of GNSS-R spaceborne observations to soil moisture and vegetation [PDF]

open access: yes, 2016
Global navigation satellite systems-reflectometry (GNSS-R) is an emerging remote sensing technique that makes use of navigation signals as signals of opportunity in a multistatic radar configuration, with as many transmitters as navigation satellites are
Camps Carmona, Adriano José   +6 more
core   +2 more sources

BDS Empowers Smart Water Conservancy Construction: Current Status, Challenges, and Future Opportunities [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The BeiDou Navigation Satellite System (BDS) is a critical spatial-temporal infrastructure in China, and since its inception, it has been widely applied across various socio-economic sectors.
Z. Pang   +5 more
doaj   +1 more source

Software receiver design for GNSS-R using multiple GNSS satellites as transmitters

open access: yesThe Journal of Engineering, 2019
A novel global navigation satellite system-reflectometry (GNSS-R) software receiver and its preliminary experimental results are presented in this study.
Shuzhu Shi, Shiwei Wang, Tao Li
doaj   +1 more source

and Navigation Group at DLR’s German Space Operations [PDF]

open access: yes
member of the Executive and Governing Board of ...
C. Rizos   +7 more
core  

Initial Results of the Precise Orbit Determination for the New-Generation BeiDou Satellites (BeiDou-3) Based on the iGMAS Network

open access: yesISPRS International Journal of Geo-Information, 2016
By August 2016, 5 new-generation BeiDou satellites (BeiDou-3) have successfully been launched. The observations of a very limited number of 9 International GNSS (Global Navigation Satellite System) Monitoring and Assessment Service (iGMAS) stations and ...
Bingfeng Tan   +4 more
doaj   +1 more source

Medium Earth Orbits: Is There a Need for a Third Protected Region? [PDF]

open access: yes
The Inter-Agency Space Debris Coordination Committee (IADC) and the United Nations have adopted the concept of near-Earth regions which should be afforded protection from the accumulation of orbital debris.
Johnson, Nicholas L.
core   +1 more source

Towards Quantum Communication from Global Navigation Satellite System

open access: yes, 2018
Satellite-based quantum communication is an invaluable resource for the realization of a quantum network at the global scale. In this regard, the use of satellites well beyond the low Earth orbits gives the advantage of long communication time with a ...
Agnesi, Costatino   +9 more
core   +1 more source

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