Results 31 to 40 of about 18,222,365 (282)

Design and Performance Analysis of BDS-3 Integrity Concept [PDF]

Remote Sensing, 2021
Compared to the BeiDou regional navigation satellite system (BDS-2), the BeiDou global navigation satellite system (BDS-3) carried out a brand new integrity concept design and construction work, which defines and achieves the integrity functions for major civil open services (OS) signals such as B1C, B2a, and B1I.
Liu, Cheng, Cao, Yueling, Zhang, Gong, Gao, Weiguang, Chen, Ying, Lu, Jun, Liu, Chonghua, Zhao, Haitao, Li, Fang   +8 more
openaire   +4 more sources

Evaluation of Network RTK Positioning Performance Based on BDS-3 New Signal System

Remote Sensing, 2021
The BeiDou navigation satellite system (BDS-3) has been deployed and provides positioning, navigation, and timing (PNT) services for users all over the world.
Pengxu Wang, Hui Liu, Zhixin Yang, Bao Shu, Xintong Xu, Guigen Nie   +5 more
doaj   +2 more sources

Analysis of BDS-3 Onboard Clocks Based on GFZ Precise Clock Products

Remote Sensing, 2022
The characteristics and performance of satellite clocks are important to the positioning, navigation, and timing (PNT) services of Global Navigation Satellite System (GNSS) users.
Tao Geng, Rui Jiang, Yifei Lv, Xin Xie
doaj   +2 more sources

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   +2 more sources

Impacts of Arc Length and ECOM Solar Radiation Pressure Models on BDS-3 Orbit Prediction

Remote Sensing, 2022
The BeiDou global navigation satellite system (BDS-3) has already provided worldwide navigation and positioning services for which the high-precision BDS-3-predicting orbit is the foundation.
Ran Li, Chunmei Zhao, Jiatong Wu, Hongyang Ma, Yang Zhang, Guang Yang, Hong Yuan, Hongyu Zhao   +7 more
doaj   +2 more sources

LEO ISL-Assisted BDS-3 and LEO Rapid Joint Precise Orbit Determination

Remote Sensing
BDS-3 faces challenges in achieving precision orbit determination (POD) due to the difficulty of establishing a globally uniform distribution of independently operated ground tracking stations. The use of onboard BDS-3 observations collected by low Earth
Le Wang, Dandan Song, Wen Lai, Bobin Cui, Guanwen Huang   +4 more
doaj   +2 more sources

LEO-Enhanced BDS-3 PPP Performance Based on B2b Signal

Remote Sensing
Since 2020, the BDS-3 has been providing real-time corrections via the B2b signal, enabling users in China and its neighboring regions to achieve kinematic positioning accuracy at the decimeter level.
Ju Hong, Rui Tu, Yangyang Liu, Yulong Ge, Fangxin Li   +4 more
doaj   +2 more sources

Integrated enhancement of BDS-3 precise orbit determination and PPP using multiple CENTISPACE™ LEO satellites

Satellite Navigation
Low Earth Orbit (LEO) navigation augmentation is widely recognized as a key development for next-generation Global Navigation Satellite System (GNSS), and its performance must be validated using real observations. This paper investigates the contribution
Hanlin Chen, Xin Xie, Tao Geng, Long Yang, Yanan Qin, Qiang Li, Chao Zhang, Qile Zhao   +7 more
doaj   +2 more sources

Characterization of GNSS Signals Tracked by the iGMAS Network Considering Recent BDS-3 Satellites

Remote Sensing, 2018
The international GNSS monitoring and assessment system (iGMAS) tracking network has been established by China to track multi-GNSS satellites. A key feature of iGMAS stations is the capability to fully track new navigation signals from the recently ...
Xin Xie, Rongxin Fang, Tao Geng, Guangxing Wang, Qile Zhao, Jingnan Liu   +5 more
doaj   +2 more sources

Temporal bone fracture presenting as isolated facial nerve paralysis mimicking Bell’s palsy: A case report

Advances in Oral and Maxillofacial Surgery, 2022
Facial nerve paralysis can be caused by temporal bone fractures. We present a case of a teenager presenting with a displaced fracture of the left zygomatic complex and left mandibular parasymphysis.
Nazish Ashfaq Khan, Bushra ul Anne Syed, Amina Usmani   +2 more
doaj   +1 more source