scholarly journals Precise Orbit Determination of LEO Satellite Using Dual-Frequency GPS Data

2009 ◽  
Vol 26 (2) ◽  
pp. 229-236 ◽  
Author(s):  
Yoo-La Hwang ◽  
Byoung-Sun Lee ◽  
Jae-Hoon Kim ◽  
Jae-Cheol Yoon
Keyword(s):  
Orbit Determination ◽  
Precise Orbit Determination ◽  
Gps Data ◽  
Dual Frequency ◽  
Precise Orbit ◽  
Leo Satellite

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.

Efficient precise orbit determination of LEO satellites using GPS

2002 ◽  
Vol 30 (2) ◽  
pp. 295-300 ◽  
Author(s):  
H. Bock ◽  
U. Hugentobler ◽  
T.A. Springer ◽  
G. Beutler
Keyword(s):  
Orbit Determination ◽  
Precise Orbit Determination ◽  
Precise Orbit ◽  
Leo Satellites

Precise orbit determination of BDS-3 satellites using B1C and B2a dual-frequency measurements

GPS Solutions ◽  
2021 ◽  
Vol 25 (3) ◽  
Author(s):  
Ran Li ◽  
Ningbo Wang ◽  
Zishen Li ◽  
Yang Zhang ◽  
Zhiyu Wang ◽  
...  
Keyword(s):  
Orbit Determination ◽  
Precise Orbit Determination ◽  
Dual Frequency ◽  
Frequency Measurements ◽  
Precise Orbit
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