Improved GPS receiver clock modeling for kinematic orbit determination of the GRACE satellites

2012 ◽  
Author(s):  
Ulrich Weinbach ◽  
Steffen Schon
Keyword(s):  
Orbit Determination ◽  
Gps Receiver ◽  
Kinematic Orbit ◽  
Receiver Clock ◽  
Grace Satellites

Determination of global positioning system (GPS) receiver clock errors: impact on positioning accuracy

2009 ◽  
Vol 20 (7) ◽  
pp. 075105 ◽  
Author(s):  
Ta-Kang Yeh ◽  
Cheinway Hwang ◽  
Guochang Xu ◽  
Chuan-Sheng Wang ◽  
Chien-Chih Lee
Keyword(s):  
Global Positioning System ◽  
Positioning System ◽  
Gps Receiver ◽  
Positioning Accuracy ◽  
Global Positioning ◽  
Receiver Clock

scholarly journals Performance Comparison of KOMPSAT-5 Precision Orbit Determination with GRACE

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Kyoung-Min Roh ◽  
Yoola Hwang
Keyword(s):  
Orbit Determination ◽  
Hardware Design ◽  
Performance Comparison ◽  
Gps Receiver ◽  
Ring Antenna ◽  
Orbital Position ◽  
Grace Satellites ◽  
Precision Orbit Determination ◽  
Gravity Recovery ◽  
Reduced Dynamic

The Korean Multipurpose Satellite-5 (KOMPSAT-5) launched on 22 August 2013 was equipped with a global positioning system (GPS) receiver for precision orbit determination (POD). Even though the GPS receiver of KOMPSAT-5 shares the same heritage as the BlackJack receiver onboard in Gravity Recovery and Climate Experiment (GRACE) satellites, KOMPSAT-5 has a lower orbital position accuracy (~10 cm) compared with GRACE (~2 cm). The reduced dynamic and kinematic methods are applied for POD of KOMPSAT-5 and GRACE to investigate the GPS observation quality due to the satellite operation concept and hardware design. The results are analyzed in terms of the number of observations and their spatial distribution, GPS signal quality, and orbital position accuracies. The results show that the frequent attitude maneuvers of KOMPSAT-5 affect the quality of the GPS signals and solutions obtained from the kinematic method compared with that determined from the reduced-dynamic method. The onboard patch GPS antenna installed in KOMPSAT-5 and its geometrical position resulted in more erratic measurement residuals by 140% compared with the choke ring antenna of GRACE. The POD accuracy is dependent on the hardware design and regular attitude tilting for the synthetic aperture radar (SAR) imaging even though the same GPS receiver performances.

Impact of GPS receiver antenna GRAPHIC residual variations on single-frequency orbit determination of LEO satellites

2019 ◽  
Vol 64 (5) ◽  
pp. 1166-1176
Author(s):  
Kai Shao ◽  
Defeng Gu ◽  
Xiao Chang ◽  
Bin Yi ◽  
Zhengming Wang
Keyword(s):  
Orbit Determination ◽  
Single Frequency ◽  
Gps Receiver ◽  
Leo Satellites
Sign in / Sign up

Export Citation Format

Share Document