Results 31 to 40 of about 17,645 (277)

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

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

IEEE 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, Kegen Yu, Xiaoxing He, Jean-Philippe Montillet, Qinzheng Li   +4 more
doaj   +1 more source

Preliminary Analysis of Intersystem Biases in BDS-2/BDS-3 Precise Time and Frequency Transfer

Remote Sensing, 2022
The Chinese BeiDou global satellite system (BDS-3) and regional system (BDS-2) are predicted to coexist over the next decade. Intersystem biases (ISBs) in BDS-2/BDS-3 play a key role in maintaining the consistency and continuity from the BDS-2 to BDS-3 ...
Pengfei Zhang, Rui Tu, Linlin Tao, Bing Wang, Yuping Gao, Xiaochun Lu   +5 more
doaj   +1 more source

Performance of Multi-GNSS in the Asia-Pacific Region: Signal Quality, Broadcast Ephemeris and Precise Point Positioning (PPP)

Remote Sensing, 2022
Since BeiDou Navigation Satellite System (BDS) and Japan’s Quasi-Zenith Satellite System (QZSS) have more visible satellites in the Asia-Pacific region, and navigation satellites of Global Positioning System (GPS), Galileo satellite navigation system ...
Mengyuan Li, Guanwen Huang, Le Wang, Wei Xie, Fan Yue   +4 more
doaj   +1 more source

Competition Pattern and Coping Strategies in Near Space [PDF]

中国工程科学
The near space serves as a transition area between airspace and the outer space, and it has unique strategic values and broad application prospects, attracting countries to compete for development.
Junlin Yang, Jingfan Yang, Dongxu Liu, WenQing Zhang, Lijing Li   +4 more
doaj   +1 more source

A new receiver clock model to enhance BDS-3 real-time PPP time transfer with the PPP-B2b service

Satellite Navigation, 2023
A new Precise Point Positioning (PPP) service, called the PPP-B2b service, has been implemented in the BeiDou-3 Navigation Satellite System (BDS-3), which brings new opportunities for time transfer.
Yulong Ge, Qing Wang, Yong Wang, Daqian Lyu, Xinyun Cao, Fei Shen, Xiaolin Meng   +6 more
doaj   +1 more source

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

Remote 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, Shuguo Pan, Wang Gao, Fei Ye, Liwei Liu, Hao Wang   +5 more
doaj   +1 more source