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Undifferenced and Uncombined GNSS Time Transfer and its Space Applications [PDF]

open access: yes, 2023
This thesis presents a framework for developing a state-of-the-art undifferenced and uncombined (UDUC) time transfer technique for space applications.
Mi, Xiaolong
core  

Precise orbit determination of Haiyang-2D using onboard BDS-3 B1C/B2a observations with ambiguity resolution

open access: yesSatellite Navigation, 2023
The Haiyang-2D altimetry mission of China is one of the first Low Earth Orbit (LEO) satellites that can receive new B1C/B2a signals from the BeiDou-3 Navigation Satellite System (BDS-3) for Precise Orbit Determination (POD).
Kecai Jiang   +6 more
semanticscholar   +1 more source

BDS-3 Time Group Delay and Its Effect on Standard Point Positioning

open access: yesRemote Sensing, 2019
The development of the BeiDou navigation system (BDS) is divided into three phases: The demonstration system (BDS-1), the regional system (BDS-2) and the global BeiDou navigation system (BDS-3).
Peipei Dai   +3 more
doaj   +1 more source

Preliminary Analysis of BDS-3 Performance for ARAIM

open access: yesNAVIGATION: Journal of the Institute of Navigation, 2023
To support the operation of advanced receiver autonomous integrity monitoring (ARAIM), an integrity support message indicating a minimum performance level of satellite constellation is required for aircraft navigation. With BDS-3 providing worldwide service since July 2020, it is desirable to undertake a detailed study on its signal-in-space range ...
Hengwei Zhang, Yiping Jiang, Ling Yang
openaire   +2 more sources

Positioning Performance Comparison Between GPS and BDS With Data Recorded at Four MGEX Stations

open access: yesIEEE Access, 2020
In December 2018, the BeiDou III (BDS-3) basic system was completed and began to provide global services. along with the BeiDou second-generation satellite navigation system (BDS-2) and Beidou first-generation satellite navigation system (BDS-1), the ...
Xiaping Ma   +4 more
doaj   +1 more source

Improving GNSS/INS Tightly Coupled Positioning by Using BDS-3 Four-Frequency Observations in Urban Environments

open access: yesRemote Sensing, 2022
Vehicular positioning in urban environments has become a research hotspot in recent years, and global navigation satellite system/inertial navigation system (GNSS/INS) tightly coupled positioning is a commonly used method. With the broadcast of BDS-3 and
Chun Ma   +5 more
doaj   +1 more source

Kinematic Absolute Positioning with Quad-Constellation GNSS [PDF]

open access: yes, 2019
The absolute positioning technique is based on a point positioning mode with a single Global Navigation Satellite System (GNSS) receiver, which has been widely used in many fields such as vehicle navigation and kinematic surveying.
Cai, Changsheng   +3 more
core   +2 more sources

Antiproliferative, Antioxidant, Chemopreventive and Antiangiogenic Potential of Chromatographic Fractions from Anemonia sulcata with and without Its Symbiont Symbiodinium in Colorectal Cancer Therapy [PDF]

open access: yes, 2023
Anemonia sulcata may be a source of marine natural products (MNPs) due to the antioxidant and antitumor activity of its crude homogenates shown in vitro in colon cancer cells.
Cabeza Montilla, Laura   +8 more
core   +1 more source

Estimation and Analysis of BDS-3 Differential Code Biases from MGEX Observations

open access: yesRemote Sensing, 2019
The third generation of China’s BeiDou Navigation Satellite System (BDS-3) began to provide global services on 27 December, 2018. Differential code bias (DCB) is one of the errors in precise BDS positioning and ionospheric modeling, but the impacts
Qisheng Wang   +5 more
doaj   +1 more source

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