Author:
Yousif Hamad,El-Rabbany Ahmed
Abstract
GPS applications such as Precise Point Positioning (PPP) require the availability of precise ephemeris at high rate. To support these applications, several institutions such as the International GNSS Service (IGS) have developed precise orbital service. Unfortunately, however, the data rate of such precise orbits is usually limited to 15 minutes. To overcome this problem, a number of orbital interpolation methods are proposed. This paper examines the performance of four interpolation methods for IGS precise GPS orbits, namely Lagrange, Newton Divided Difference, Cubic Spline and Trigonometric interpolation. In addition, the paper discusses a new approach, which utilizes the residuals between the broadcast and precise ephemeris to generate a high density precise ephemeris. It is shown that the new approach produces better results than previously reported orbital interpolation accuracy.
Publisher
Cambridge University Press (CUP)
Subject
Ocean Engineering,Oceanography
Reference6 articles.
1. Schueler T (1998). “On the interpolation of SP3 orbit files.” IfEN Technical IFEN-TropAC-TN – 002 – 01. Institute of Geodesy and Navigation, University of Federal Armed Forces, Munich.
2. A brief review of basic GPS orbit interpolation strategies
3. Remondi B. (1991). “NGS Second Generation ASCII and Binary Orbit Formats and Associated Interpolation Studies.” Poster presentation at the 20th General Assembly of the IUGG, Vienna, 11–24 August.
Cited by
22 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献