Validation of SGP4 and IS-GPS-200D Against GPS Precision Ephemerides

AAS 07-127

Kelso, T.S., "Validation of SGP4 and IS-GPS-200D Against GPS Precision Ephemerides," presented at the 17th AAS/AIAA Space Flight Mechanics Conference, Sedona, AZ, 2007 January 29.

Abstract

Many applications use the NORAD SGP4 orbital model for predicting satellite ephemerides and often these applications require knowledge of the errors associated with those predictions. Unfortunately, the SGP4 orbital data, in the form of two-line element (TLE) sets, does not provide any kind of accuracy information. Some approaches have been published which purport to estimate these errors by performing consistency or abutment checks, but they do not validate their assumptions or provide any validation by comparison to high-accuracy ephemerides. This paper will assess the suitability of these approaches by comparing SGP4 ephemerides to precision ephemerides available for the GPS constellation.

Conference Materials

  • Paper (Adobe Acrobat, 727,897 bytes)
  • Presentation (PowerPoint, 1,943,040 bytes)
  • Additional Images: Almanac Comparisons to Precise Ephemerides

  • PRN01 Almanac Comparison
    PRN01 Almanac Comparison
    PRN01 Almanac Comparison Statistics
    PRN01 Almanac Comparison Statistics
    PRN02 Almanac Comparison
    PRN02 Almanac Comparison
    PRN02 Almanac Comparison Statistics
    PRN02 Almanac Comparison Statistics
    PRN04 Almanac Comparison
    PRN04 Almanac Comparison
    PRN04 Almanac Comparison Statistics
    PRN04 Almanac Comparison Statistics
    PRN07 Almanac Comparison
    PRN07 Almanac Comparison
    PRN07 Almanac Comparison Statistics
    PRN07 Almanac Comparison Statistics
    PRN08 Almanac Comparison
    PRN08 Almanac Comparison
    PRN08 Almanac Comparison Statistics
    PRN08 Almanac Comparison Statistics
    PRN09 Almanac Comparison
    PRN09 Almanac Comparison
    PRN09 Almanac Comparison Statistics
    PRN09 Almanac Comparison Statistics
    PRN10 Almanac Comparison
    PRN10 Almanac Comparison
    PRN10 Almanac Comparison Statistics
    PRN10 Almanac Comparison Statistics
    PRN11 Almanac Comparison
    PRN11 Almanac Comparison
    PRN11 Almanac Comparison Statistics
    PRN11 Almanac Comparison Statistics
    PRN13 Almanac Comparison
    PRN13 Almanac Comparison
    PRN13 Almanac Comparison Statistics
    PRN13 Almanac Comparison Statistics
    PRN14 Almanac Comparison
    PRN14 Almanac Comparison
    PRN14 Almanac Comparison Statistics
    PRN14 Almanac Comparison Statistics
    PRN16 Almanac Comparison
    PRN16 Almanac Comparison
    PRN16 Almanac Comparison Statistics
    PRN16 Almanac Comparison Statistics
    PRN17 Almanac Comparison
    PRN17 Almanac Comparison
    PRN17 Almanac Comparison Statistics
    PRN17 Almanac Comparison Statistics
    PRN18 Almanac Comparison
    PRN18 Almanac Comparison
    PRN18 Almanac Comparison Statistics
    PRN18 Almanac Comparison Statistics
    PRN19 Almanac Comparison
    PRN19 Almanac Comparison
    PRN19 Almanac Comparison Statistics
    PRN19 Almanac Comparison Statistics
    PRN20 Almanac Comparison
    PRN20 Almanac Comparison
    PRN20 Almanac Comparison Statistics
    PRN20 Almanac Comparison Statistics
    PRN21 Almanac Comparison
    PRN21 Almanac Comparison
    PRN21 Almanac Comparison Statistics
    PRN21 Almanac Comparison Statistics
    PRN22 Almanac Comparison
    PRN22 Almanac Comparison
    PRN22 Almanac Comparison Statistics
    PRN22 Almanac Comparison Statistics
    PRN23 Almanac Comparison
    PRN23 Almanac Comparison
    PRN23 Almanac Comparison Statistics
    PRN23 Almanac Comparison Statistics
    PRN24 Almanac Comparison
    PRN24 Almanac Comparison
    PRN24 Almanac Comparison Statistics
    PRN24 Almanac Comparison Statistics
    PRN26 Almanac Comparison
    PRN26 Almanac Comparison
    PRN26 Almanac Comparison Statistics
    PRN26 Almanac Comparison Statistics
    PRN27 Almanac Comparison
    PRN27 Almanac Comparison
    PRN27 Almanac Comparison Statistics
    PRN27 Almanac Comparison Statistics
    PRN28 Almanac Comparison
    PRN28 Almanac Comparison
    PRN28 Almanac Comparison Statistics
    PRN28 Almanac Comparison Statistics

  • Additional Images: TLE Comparisons to Precise Ephemerides and TLE Consistency Plots

  • PRN01 TLE Comparison
    PRN01 TLE Comparison
    PRN01 TLE Comparison Statistics
    PRN01 TLE Comparison Statistics
    PRN01 TLE Consistency
    PRN01 TLE Consistency
    PRN01 TLE Consistency Statistics
    PRN01 TLE Consistency Statistics
    PRN02 TLE Comparison
    PRN02 TLE Comparison
    PRN02 TLE Comparison Statistics
    PRN02 TLE Comparison Statistics
    PRN02 TLE Consistency
    PRN02 TLE Consistency
    PRN02 TLE Consistency Statistics
    PRN02 TLE Consistency Statistics
    PRN04 TLE Comparison
    PRN04 TLE Comparison
    PRN04 TLE Comparison Statistics
    PRN04 TLE Comparison Statistics
    PRN04 TLE Consistency
    PRN04 TLE Consistency
    PRN04 TLE Consistency Statistics
    PRN04 TLE Consistency Statistics
    PRN07 TLE Comparison
    PRN07 TLE Comparison
    PRN07 TLE Comparison Statistics
    PRN07 TLE Comparison Statistics
    PRN07 TLE Consistency
    PRN07 TLE Consistency
    PRN07 TLE Consistency Statistics
    PRN07 TLE Consistency Statistics
    PRN08 TLE Comparison
    PRN08 TLE Comparison
    PRN08 TLE Comparison Statistics
    PRN08 TLE Comparison Statistics
    PRN08 TLE Consistency
    PRN08 TLE Consistency
    PRN08 TLE Consistency Statistics
    PRN08 TLE Consistency Statistics
    PRN09 TLE Comparison
    PRN09 TLE Comparison
    PRN09 TLE Comparison Statistics
    PRN09 TLE Comparison Statistics
    PRN09 TLE Consistency
    PRN09 TLE Consistency
    PRN09 TLE Consistency Statistics
    PRN09 TLE Consistency Statistics
    PRN10 TLE Comparison
    PRN10 TLE Comparison
    PRN10 TLE Comparison Statistics
    PRN10 TLE Comparison Statistics
    PRN10 TLE Consistency
    PRN10 TLE Consistency
    PRN10 TLE Consistency Statistics
    PRN10 TLE Consistency Statistics
    PRN11 TLE Comparison
    PRN11 TLE Comparison
    PRN11 TLE Comparison Statistics
    PRN11 TLE Comparison Statistics
    PRN11 TLE Consistency
    PRN11 TLE Consistency
    PRN11 TLE Consistency Statistics
    PRN11 TLE Consistency Statistics
    PRN13 TLE Comparison
    PRN13 TLE Comparison
    PRN13 TLE Comparison Statistics
    PRN13 TLE Comparison Statistics
    PRN13 TLE Consistency
    PRN13 TLE Consistency
    PRN13 TLE Consistency Statistics
    PRN13 TLE Consistency Statistics
    PRN14 TLE Comparison
    PRN14 TLE Comparison
    PRN14 TLE Comparison Statistics
    PRN14 TLE Comparison Statistics
    PRN14 TLE Consistency
    PRN14 TLE Consistency
    PRN14 TLE Consistency Statistics
    PRN14 TLE Consistency Statistics
    PRN16 TLE Comparison
    PRN16 TLE Comparison
    PRN16 TLE Comparison Statistics
    PRN16 TLE Comparison Statistics
    PRN16 TLE Consistency
    PRN16 TLE Consistency
    PRN16 TLE Consistency Statistics
    PRN16 TLE Consistency Statistics
    PRN17 TLE Comparison
    PRN17 TLE Comparison
    PRN17 TLE Comparison Statistics
    PRN17 TLE Comparison Statistics
    PRN17 TLE Consistency
    PRN17 TLE Consistency
    PRN17 TLE Consistency Statistics
    PRN17 TLE Consistency Statistics
    PRN18 TLE Comparison
    PRN18 TLE Comparison
    PRN18 TLE Comparison Statistics
    PRN18 TLE Comparison Statistics
    PRN18 TLE Consistency
    PRN18 TLE Consistency
    PRN18 TLE Consistency Statistics
    PRN18 TLE Consistency Statistics
    PRN19 TLE Comparison
    PRN19 TLE Comparison
    PRN19 TLE Comparison Statistics
    PRN19 TLE Comparison Statistics
    PRN19 TLE Consistency
    PRN19 TLE Consistency
    PRN19 TLE Consistency Statistics
    PRN19 TLE Consistency Statistics
    PRN20 TLE Comparison
    PRN20 TLE Comparison
    PRN20 TLE Comparison Statistics
    PRN20 TLE Comparison Statistics
    PRN20 TLE Consistency
    PRN20 TLE Consistency
    PRN20 TLE Consistency Statistics
    PRN20 TLE Consistency Statistics
    PRN21 TLE Comparison
    PRN21 TLE Comparison
    PRN21 TLE Comparison Statistics
    PRN21 TLE Comparison Statistics
    PRN21 TLE Consistency
    PRN21 TLE Consistency
    PRN21 TLE Consistency Statistics
    PRN21 TLE Consistency Statistics
    PRN22 TLE Comparison
    PRN22 TLE Comparison
    PRN22 TLE Comparison Statistics
    PRN22 TLE Comparison Statistics
    PRN22 TLE Consistency
    PRN22 TLE Consistency
    PRN22 TLE Consistency Statistics
    PRN22 TLE Consistency Statistics
    PRN23 TLE Comparison
    PRN23 TLE Comparison
    PRN23 TLE Comparison Statistics
    PRN23 TLE Comparison Statistics
    PRN23 TLE Consistency
    PRN23 TLE Consistency
    PRN23 TLE Consistency Statistics
    PRN23 TLE Consistency Statistics
    PRN24 TLE Comparison
    PRN24 TLE Comparison
    PRN24 TLE Comparison Statistics
    PRN24 TLE Comparison Statistics
    PRN24 TLE Consistency
    PRN24 TLE Consistency
    PRN24 TLE Consistency Statistics
    PRN24 TLE Consistency Statistics
    PRN26 TLE Comparison
    PRN26 TLE Comparison
    PRN26 TLE Comparison Statistics
    PRN26 TLE Comparison Statistics
    PRN26 TLE Consistency
    PRN26 TLE Consistency
    PRN26 TLE Consistency Statistics
    PRN26 TLE Consistency Statistics
    PRN27 TLE Comparison
    PRN27 TLE Comparison
    PRN27 TLE Comparison Statistics
    PRN27 TLE Comparison Statistics
    PRN27 TLE Consistency
    PRN27 TLE Consistency
    PRN27 TLE Consistency Statistics
    PRN27 TLE Consistency Statistics
    PRN28 TLE Comparison
    PRN28 TLE Comparison
    PRN28 TLE Comparison Statistics
    PRN28 TLE Comparison Statistics
    PRN28 TLE Consistency
    PRN28 TLE Consistency
    PRN28 TLE Consistency Statistics
    PRN28 TLE Consistency Statistics

TLE Data Space Data
Current GPS
Archives EOP
Documentation Space Weather
SATCAT Columns
Boxscore Software
SOCRATES
Dr. T.S. Kelso [TS.Kelso@celestrak.com/TS.Kelso@centerforspace.com]
Follow CelesTrak on Twitter @TSKelso
Last updated: 2014 May 17 01:13:06 UTC
Accessed 17,913 times since 2000 December 16
Current system time: 2014 August 29 20:05:14 UTC