Performance Analysis and Conversion Parameter Evaluation of WGS84/ITRF Ephemeris Framework Implemented by NGA and IGS

Qinghua Zhang, Fengjuan Rong, Zhengsheng Chen

2018

Abstract

The WGS84 coordinate system of GPS is dominated by the United States. At present, the ephemeris framework of WGS84 is mainly established and maintained by NGA with precise ephemeris. However, the IGS precise ephemeris usually adopted by navigation users is an ephemeris framework of ITRF. This paper mainly evaluates the differences and transformation parameters between WGS84/ITRF. In the example of this article, the WGS84/ITRF transformation parameter sequence is used daily from 2001 to the present. By analysing the seven conversion parameters, it is found that only in a few days there are still wild values. After eliminating field values, the three translation parameters are not more than 10cm, three rotation parameters are no more than 0.1mas, and the scale parameters are not more than 0.1ppb.The characteristics of conversion parameters in WGS84/ITRF can provide important reference for the GNSS users in the precision positioning and orbit determination.

Paper Citation

in Harvard Style

Zhang Q., Rong F. and Chen Z. (2018). Performance Analysis and Conversion Parameter Evaluation of WGS84/ITRF Ephemeris Framework Implemented by NGA and IGS.In Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG, ISBN 978-989-758-342-1, pages 380-385. DOI: 10.5220/0007430703800385

in Bibtex Style

@conference{iweg18,
author={Qinghua Zhang and Fengjuan Rong and Zhengsheng Chen},
title={Performance Analysis and Conversion Parameter Evaluation of WGS84/ITRF Ephemeris Framework Implemented by NGA and IGS},
booktitle={Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,},
year={2018},
pages={380-385},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007430703800385},
isbn={978-989-758-342-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,
TI - Performance Analysis and Conversion Parameter Evaluation of WGS84/ITRF Ephemeris Framework Implemented by NGA and IGS
SN - 978-989-758-342-1
AU - Zhang Q.
AU - Rong F.
AU - Chen Z.
PY - 2018
SP - 380
EP - 385
DO - 10.5220/0007430703800385