GNSS global real-time augmentation positioning: Real-time precise satellite clock estimation, prototype system construction and performance analysis

2018 ◽  
Vol 61 (1) ◽  
pp. 367-384 ◽  
Author(s):  
Liang Chen ◽  
Qile Zhao ◽  
Zhigang Hu ◽  
Xinyuan Jiang ◽  
Changjiang Geng ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Real Time ◽  
Prototype System ◽  
System Construction ◽  
Satellite Clock ◽  
And Performance ◽  
Clock Estimation

scholarly journals A Decentralized Processing Schema for Efficient and Robust Real-time Multi-GNSS Satellite Clock Estimation

2019 ◽  
Vol 11 (21) ◽  
pp. 2595
Author(s):  
Jiang ◽  
Gu ◽  
Li ◽  
Ge ◽  
Schuh
Keyword(s):  
Real Time ◽  
High Frequency ◽  
Precise Point Positioning ◽  
High Rate ◽  
Reference Network ◽  
Satellite Clock ◽  
Navigation Data ◽  
Data Analyst ◽  
New Strategy ◽  
Clock Estimation

Real-time multi-GNSS precise point positioning (PPP) requires the support of high-rate satellite clock corrections. Due to the large number of ambiguity parameters, it is difficult to update clocks at high frequency in real-time for a large reference network. With the increasing number of satellites of multi-GNSS constellations and the number of stations, real-time high-rate clock estimation becomes a big challenge. In this contribution, we propose a decentralized clock estimation (DECE) strategy, in which both undifferenced (UD) and epoch-differenced (ED) mode are implemented but run separately in different computers, and their output clocks are combined in another process to generate a unique product. While redundant UD and/or ED processing lines can be run in offsite computers to improve the robustness, processing lines for different networks can also be included to improve the clock quality. The new strategy is realized based on the Position and Navigation Data Analyst (PANDA) software package and is experimentally validated with about 110 real-time stations for clock estimation by comparison of the estimated clocks and the PPP performance applying estimated clocks. The results of the real-time PPP experiment using 12 global stations show that with the greatly improved computational efficiency, 3.14 cm in horizontal and 5.51 cm in vertical can be achieved using the estimated DECE clock.

Real-time gymnast detection and performance analysis with a portable 3D camera

2017 ◽  
Vol 159 ◽  
pp. 154-163 ◽  
Author(s):  
Brian Reily ◽  
Hao Zhang ◽  
William Hoff
Keyword(s):  
Performance Analysis ◽  
Real Time ◽  
3D Camera ◽  
And Performance
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