Results 21 to 30 of about 19,022 (323)

Single-epoch RTK performance assessment of tightly combined BDS-2 and newly complete BDS-3

Satellite Navigation, 2021
The BeiDou global navigation satellite system (BDS-3) constellation deployment has been completed on June 23, 2020, with a full constellation comprising 30 satellites.
Wanke Liu, Mingkui Wu, Xiaohong Zhang, Wang Wang, Wei Ke, Zhiqin Zhu   +5 more
doaj   +1 more source

THE PERFORMANCE ANALYSIS OF BDS POSITIONING IN NORDIC AREAS BASED ON THE SMARTPHONE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Nowadays, the Global Navigation Satellite System (GNSS) is widely used in many applications. As a new system, China's BeiDou navigation system (BDS) is emerging in recent years.
C. Chen, Y. Chen, C. Jiang, Y. Bo, J. Jia, H. Sun, Z. He   +6 more
doaj   +1 more source

The Initial Performance Evaluation of Mixed Multi-Frequency Undifferenced and Uncombined BDS-2/3 Precise Point Positioning under Urban Environmental Conditions

Remote Sensing, 2022
With the full operation of the global BeiDou navigation satellite system (BDS-3), positioning performance can be further enhanced by BDS-3 combined with the regional BeiDou navigation satellite system (BDS-2).
Fuxin Yang, Chuanlei Zheng, Jie Zhang, Zhiguo Sun, Liang Li, Lin Zhao   +5 more
doaj   +1 more source

Sustained gene expression in the retina by improved episomal vectors [PDF]

, 2014
Gene and cellular therapies are nowadays part of therapeutic strategies for the treatment of diverse pathologies. The drawbacks associated with gene therapy-low levels of transgene expression, vector loss during mitosis, and gene silencing-need to be ...
Ana V. Oliveira, Conley S.M., Davis A.A., Gabriela A. Silva, Reinisalo M., Rudolf Haase, Sofia M. Calado, Susana Machado   +7 more
core   +1 more source

Assessment of BeiDou-3 and Multi-GNSS Precise Point Positioning Performance

Sensors, 2019
With the launch of BDS-3 and Galileo new satellites, the BeiDou navigation satellite system (BDS) has developed from the regional to global system, and the Galileo constellation will consist of 26 satellites in space. Thus, BDS, GPS, GLONASS, and Galileo
Guoqiang Jiao, Shuli Song, Yulong Ge, Ke Su, Yangyang Liu   +4 more
doaj   +1 more source

Analysis and Assessment of BDS-2 and BDS-3 Broadcast Ephemeris: Accuracy, the Datum of Broadcast Clocks and Its Impact on Single Point Positioning

Remote Sensing, 2020
For the global ordinary users, the broadcast ephemeris plays important roles in positioning, navigation and timing (PNT) services. With the construction of a new generation of the BeiDou navigation satellite system (BDS), the development of BDS has ...
Guoqiang Jiao, Shuli Song, Yangyang Liu, Ke Su, Na Cheng, Shengli Wang   +5 more
doaj   +1 more source

Performance Evaluation of Precise Point Positioning for BeiDou-3 B1c/B2a Signals in the Global Range

Sensors, 2021
With the construction and development of the BeiDou navigation satellite system (BDS), the precise point positioning (PPP) performance of the BDS is worthy of research.
Ershen Wang, Tao Yang, Zhi Wang, Yize Zhang, Jing Guo, Wansen Shu, Pingping Qu   +6 more
doaj   +1 more source

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

Remote 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, Yulong Ge, Weijin Qin, Xuhai Yang   +3 more
doaj   +1 more source

Investigating Performance of BDS-2+3 Dual-Frequency Absolute Positioning With Broadcast Ephemerides, RTS and Final MGEX Products

IEEE Access, 2023
BDS-3 was formally put into service on July 31, 2020, and now along with BDS-2 provides the positioning, navigation and timing services. In this contribution, different techniques of dual-frequency absolute positioning using the fully serviceable BDS-2 ...
Shengnan Liu, Shaolin Zhu, Jian Zhang
doaj   +1 more source

Evaluation of Inter-System Bias between BDS-2 and BDS-3 Satellites and Its Impact on Precise Point Positioning

Remote Sensing, 2020
The BeiDou navigation satellite system (BDS) currently has 41 satellites in orbits and will reach its full constellation following the launch of the last BDS satellite in June 2020 to provide navigation, positioning, and timing (PNT) services for global ...
Wen Zhao, Hua Chen, Yang Gao, Weiping Jiang, Xuexi Liu   +4 more
doaj   +1 more source