Estimation Strategy and Accuracy Analysis of GNSS Real-Time Precise Satellite Clock Error

2015 ◽  
pp. 57-66 ◽  
Author(s):  
Liang Chen ◽  
Changjiang Geng ◽  
Quan Zhou ◽  
Wenhai Jiao
Keyword(s):  
Real Time ◽  
Accuracy Analysis ◽  
Satellite Clock ◽  
Estimation Strategy ◽  
Clock Error ◽  
Satellite Clock Error

scholarly journals Satellite Clock Error and Orbital Solution Error Estimation for Precise Navigation Applications

Positioning ◽  
2014 ◽  
Vol 05 (01) ◽  
pp. 22-26 ◽  
Author(s):  
Bharati Bidikar ◽  
Gottapu Sasibhushana Rao ◽  
Laveti Ganesh ◽  
MNVS Santosh Kumar
Keyword(s):  
Error Estimation ◽  
Satellite Clock ◽  
Clock Error ◽  
Satellite Clock Error ◽  
Orbital Solution

The AR Model with Trend Item and the Corresponding Algorithm of AO Detection and Satellite Clock Error Prediction

2021 ◽  
pp. 584-598
Author(s):  
Songhui Han ◽  
Yisong Gong ◽  
Jianwen Li ◽  
Guozhong Li ◽  
Xinna Li ◽  
...  
Keyword(s):  
Ar Model ◽  
Error Prediction ◽  
Satellite Clock ◽  
Clock Error ◽  
Satellite Clock Error ◽  
Clock Error Prediction

scholarly journals Evaluating the Effect of Global Positioning System (GPS) Satellite Clock Error via GPS Simulation

2016 ◽  
Vol 37 ◽  
pp. 012013 ◽  
Author(s):  
Dinesh Sathyamoorthy ◽  
Shalini Shafii ◽  
Zainal Fitry M Amin ◽  
Asmariah Jusoh ◽  
Siti Zainun Ali
Keyword(s):  
Global Positioning System ◽  
Positioning System ◽  
Satellite Clock ◽  
Clock Error ◽  
Global Positioning ◽  
Satellite Clock Error

An Optimizing Evaluation of Estimation Algorithm about the Fault Detection and Exclusion in the WAAS

2013 ◽  
Vol 397-400 ◽  
pp. 1611-1614
Author(s):  
Rui Bin Zhao ◽  
Rui Li ◽  
Zhi Gang Huang ◽  
Bo Shao
Keyword(s):  
Fault Detection ◽  
Estimation Method ◽  
Engineering Application ◽  
Estimation Algorithm ◽  
Satellite Clock ◽  
Clock Error ◽  
Wide Area Augmentation System ◽  
Integrity Risk ◽  
Position Solution ◽  
Satellite Clock Error

The fault detection and exclusion (FDE) algorithm played a very important role in the Wide Area Augmentation System (WAAS). When the WAAS was not available, the FDE algorithm could provide the monitored information for the navigation position solution. It could autonomously provide the integrity monitoring for the position solution, which it had a capability to detect and prevent a positioning failure that affected the navigation. An optimizing evaluation of estimation method was employed in detecting and isolating the outlying measurements for the satellite ephemeris error and the satellite clock error, which could assess the integrity risk in the WAAS. Therefore this algorithm could provide more precise integrity parameters of the satellite ephemeris error and clock error, which the method is more suitable at the master station for engineering application about the satellite.

A satellite clock error correction method in the wide area differential system

2009 ◽  
Vol 54 (24) ◽  
pp. 4616-4623 ◽  
Author(s):  
ChengLin Cai ◽  
XiaoHui Li ◽  
HaiTao Wu ◽  
XingWang Chang
Keyword(s):  
Error Correction ◽  
Differential System ◽  
Correction Method ◽  
Wide Area ◽  
Satellite Clock ◽  
Clock Error ◽  
Error Correction Method ◽  
Satellite Clock Error

Research on the impact factors of GRACE precise orbit determination by dynamic method

2018 ◽  
Vol 12 (3) ◽  
pp. 249-257 ◽  
Author(s):  
Nan-nan Guo ◽  
Xu-hua Zhou ◽  
Kai Li ◽  
Bin Wu
Keyword(s):  
Orbit Determination ◽  
Precise Orbit Determination ◽  
Sampling Interval ◽  
Satellite Clock ◽  
Position Accuracy ◽  
Precise Orbit ◽  
Clock Error ◽  
Leo Satellites ◽  
Satellite Clock Error

Abstract With the successful use of GPS-only-based POD (precise orbit determination), more and more satellites carry onboard GPS receivers to support their orbit accuracy requirements. It provides continuous GPS observations in high precision, and becomes an indispensable way to obtain the orbit of LEO satellites. Precise orbit determination of LEO satellites plays an important role for the application of LEO satellites. Numerous factors should be considered in the POD processing. In this paper, several factors that impact precise orbit determination are analyzed, namely the satellite altitude, the time-variable earth’s gravity field, the GPS satellite clock error and accelerometer observation. The GRACE satellites provide ideal platform to study the performance of factors for precise orbit determination using zero-difference GPS data. These factors are quantitatively analyzed on affecting the accuracy of dynamic orbit using GRACE observations from 2005 to 2011 by SHORDE software. The study indicates that: (1) with the altitude of the GRACE satellite is lowered from 480 km to 460 km in seven years, the 3D (three-dimension) position accuracy of GRACE satellite orbit is about 3∼4 cm based on long spans data; (2) the accelerometer data improves the 3D position accuracy of GRACE in about 1 cm; (3) the accuracy of zero-difference dynamic orbit is about 6 cm with the GPS satellite clock error products in 5 min sampling interval and can be raised to 4 cm, if the GPS satellite clock error products with 30 s sampling interval can be adopted. (4) the time-variable part of earth gravity field model improves the 3D position accuracy of GRACE in about 0.5∼1.5 cm. Based on this study, we quantitatively analyze the factors that affect precise orbit determination of LEO satellites. This study plays an important role to improve the accuracy of LEO satellites orbit determination.

Sign in / Sign up

Export Citation Format

Share Document