Results 71 to 80 of about 985 (154)

A Real-Time Detection Method for BDS Signal in Space Anomalies

Sensors, 2019
Signal In Space (SIS) anomalies in satellite navigation systems can degrade satellite-based navigation and positioning performance. The occurrence of SIS anomalies from the BeiDou navigation satellite System (BDS) may be more frequent than for the Global
Chun Cheng, Yuxin Zhao, Liang Li, Lin Zhao   +3 more
doaj   +1 more source

The Design and Analysis of a Lunar Navigation SmallSat for Southern Hemisphere Moon Navigation

IEEE Access
Being Earth’s only natural satellite, the moon is crucial for human space exploration and serves as a vital base for additional deep space endeavors.
Xiao Chen, Yong Zheng, Lan Du, Zhongkai Zhang   +3 more
doaj   +1 more source

Orbit and clock products for quad-system satellites with undifferenced ambiguity fixing approach

Satellite Navigation
Integer Ambiguity Resolution (IAR) can significantly improve the accuracy of GNSS Precise Orbit Determination (POD). Traditionally, the IAR in POD is achieved at the Double Differenced (DD) level.
Jiaqi Wu, Xingxing Li, Yongqiang Yuan, Keke Zhang, Xin Li, Jiaqing Lou, Yun Xiong   +6 more
doaj   +1 more source

Considerations on the applicability of the BeiDou System in hydraulic engineering safety monitoring

Shuili Shuiyun Gongcheng Xuebao
The BeiDou System (BDS) is a Chinese-developed global satellite navigation system that offers advantages such as global coverage, short-message communication, and real-time positioning.
LIU Yan, HOU Wenang, DU Zhenhan, HUANG Jianfeng   +3 more
doaj   +1 more source

Real-Time Precise Point Positioning Method Considering Broadcast Ephemeris Discontinuities

Navigation
With advancements in the broadcast ephemeris accuracy of global navigation satellite systems (GNSSs), precise point positioning based on broadcast ephemeris (BE-PPP) is gradually showing promising prospects.
Quanrun Cheng, Junping Chen, Yize Zhang, Chao Yu   +3 more
doaj   +1 more source

The Development of China's Beidou Navigation Satellite System (BDS) Technology to Counter the United States' Global Positioning System (GPS)

China successfully launched the third phase of construction in June 2020, making them the third country to independently have their own satellite in orbit after the United States and Russia. The satellite parts, which total 24 satellites, are placed in three different orbits and at the same time make them the owners of the satellites who place the ...
openaire   +1 more source

A Three-Layer Adaptive Kalman Filter Approach for Multi-Source Time Fusion Using Temperature-Compensated Oscillators with GNSS and eLoran Backup. [PDF]

Sensors (Basel)
Yuan Z, Gao S, Li P, Zhang S.
europepmc   +1 more source

Remote Performance Evaluation of High-Precision Timekeeping Systems Based on BDS Real-Time PPP. [PDF]

Sensors (Basel)
Yang X, Zhang X, Wu J, Guo J.
europepmc   +1 more source

Analysis and Forecasting of Clock Product Deviation for BDS-3 PPP-B2b Based on the Normalized Time-Frequency Transform. [PDF]

Sensors (Basel)
Wu M, Liu J, Liang Y, Yang Y, Luo Q, Zhan H.   +5 more
europepmc   +1 more source

A Method for Enhancing the Positioning Performance of PPP-B2b by Integrating Galileo Observation. [PDF]

Sensors (Basel)
Shang X, Liu L, Yuan Y, Tong M, He Q, Gong X.   +5 more
europepmc   +1 more source