GPS Solutions

, Volume 12, Issue 3, pp 187–198 | Cite as

Precision real-time navigation of LEO satellites using global positioning system measurements

Original Article

Abstract

Continued advancements in remote sensing technology along with a trend towards highly autonomous spacecraft provide a strong motivation for accurate real-time navigation of satellites in low Earth orbit (LEO). Global Navigation Satellite System (GNSS) sensors nowadays enable a continuous tracking and provide low-noise radiometric measurements onboard a user spacecraft. Following the deactivation of Selective Availability a representative real-time positioning accuracy of 10 m is presently achieved by spaceborne global positioning system (GPS) receivers on LEO satellites. This accuracy can notably be improved by use of dynamic orbit determination techniques. Besides a filtering of measurement noise and other short-term errors, these techniques enable the processing of ambiguous measurements such as carrier phase or code-carrier combinations. In this paper a reference algorithm for real-time onboard orbit determination is described and tested with GPS measurements from various ongoing space missions covering an altitude range of 400–800 km. A trade-off between modeling effort and achievable accuracy is performed, which takes into account the limitations of available onboard processors and the restricted upload capabilities. Furthermore, the benefits of different measurements types and the available real-time ephemeris products are assessed. Using GPS broadcast ephemerides a real-time position accuracy of about 0.5 m (3D rms) is feasible with dual-frequency carrier phase measurements. Slightly inferior results (0.6–1 m) are achieved with single-frequency code-carrier combinations or dual-frequency code. For further performance improvements the use of more accurate real-time GPS ephemeris products is mandatory. By way of example, it is shown that the TDRSS Augmentation Service for Satellites (TASS) offers the potential for 0.1–0.2 m real-time navigation accuracies onboard LEO satellites.

Keywords

Real-time navigation Orbit determination GPS LEO satellites 

References

  1. Bar-Sever Y, Young L, Stocklin F, Heffernan P, Rush J (2004) The NASA global differential GPS system (GDGPS) and The TDRSS Augmentation Service for Satellites (TASS), ESA 2nd workshop on navigation user equipment, December 2004 Noordwijk, The NetherlandsGoogle Scholar
  2. Beutler G, Rothacher M, Schaer S, Springer TA, Kouba J, Neilan RE (1999) The International GPS Service (IGS): an interdisciplinary service in support of earth sciences. Adv Space Res 23(4):631–635CrossRefGoogle Scholar
  3. Creel T, Dorsey AJ, Mendicki PJ, Little J, Mach RG, Renfro BA (2006) The legacy accuracy improvement initiative, GPS World 17/3,20Google Scholar
  4. Feng Y (2001) An alternative orbit integration algorithm for GPS based precise LEO autonomous navigation. GPS Soliut 5(2):1–11CrossRefGoogle Scholar
  5. Gill E, Comparison of the performance of microprocessors for space-based navigation applications (2005), DLR/GSOC TN 05–02, Deutsches Zentrum für Luft- und Raumfahrt, OberpfaffenhofenGoogle Scholar
  6. Goldstein DB, Born GH, Axelrad P (2001) Real-time, autonomous, precise orbit determination using GPS. Navigation 48(3):155–168Google Scholar
  7. Haas L, Pittelkau M (1999) Real-time high accuracy GPS onboard orbit determination for use on remote sensing satellites. In: Proceedings of ION GPS 99, Institute of Navigation, Nashville, TN, 14–17 Sept 1999, pp 829–836Google Scholar
  8. Hart RC, Hartman KR, Long AC, Lee T, Oza DH (1996) Global positioning system (GPS) enhanced orbit determination experiment (GEODE) on the small satellite technology initiative (SSTI) Lewis Spacecraft. In: Proceedings of the ION GPS 96Google Scholar
  9. Harris I, Priester W (1962) Time-dependent structure of the upper atmosphere, NASA TN D-1443, Goddard Space Flight Center, MDGoogle Scholar
  10. Hairer E, Norsett SP, Wanner G (1987) Solving ordinary differential equations I. Springer, BerlinGoogle Scholar
  11. Loiselet M, Stricker N, Menard Y, Luntama JP (2000) GRAS—MetOp’s GPS-based atmospheric sounder. ESA Bull 102:38–44Google Scholar
  12. Jayles Ch, Vincent P, Rozo F, Balandreaud F (2004) DORIS-DIODE: Jason-1 has a Navigator on Board. Mar Geodesy 27:753–771CrossRefGoogle Scholar
  13. Montenbruck O, Gill E (2001) State interpolation for on-board navigation systems, Aerospace Science and Technology 5:209–220. doi:101016/S1270-9638(01)01096-3 Google Scholar
  14. Montenbruck O, Gill E (2000) Satellite orbits. Springer, HeidelbergGoogle Scholar
  15. Montenbruck O, van Helleputte T, Kroes R, Gill E (2005) Reduced dynamic orbit determination using GPS code and carrier measurements. Aerosp Sci Technol 9(3):261–271. doi:101016/jast200501003 CrossRefGoogle Scholar
  16. Montenbruck O, Garcia-Fernandez M, Williams J (2006a) Performance comparison of semi-codeless GPS receivers for LEO satellites. GPS Solut 10:249–261. doi:101007/s10291-006-0025-9 CrossRefGoogle Scholar
  17. Montenbruck O, Gill E, Markgraf M (2006b) Phoenix-XNS—a miniature real-time navigation system for LEO satellites, 3rd ESA Workshop on Satellite Navigation User Equipment Technologies, NAVITEC’2006, 11–13 December 2006, NoordwijkGoogle Scholar
  18. Montenbruck O, Markgraf M, Garcia M, Helm A (2007) GPS for microsatellites—status and perspectives, 6th IAA symposium on small satellites for earth observation, 23–26 April 2007, Berlin, GermanyGoogle Scholar
  19. Potti J, Carmona JC, Bernedo P, Silvestrin P (1995) An autonomous GNSS-based orbit determination system for low-Earth observation satellites. In: Proceedings of the ION GPS-95, Institute of Navigation, 12–15 September 1995. Palm Springs, CA, pp 173–182Google Scholar
  20. Reichert A, Meehan T, Munson T (2002) Toward decimeter-level real-time orbit determination: a demonstration using the SAC-C and CHAMP Spacecraft. In: Proceediings of the ION-GPS-2002, 24–27 September 2002, Portland, OregonGoogle Scholar
  21. Reichinger H, Griesauer F, Zangerl F, Consoli A, Piazza F, Garcia-Rodriguez A (2006) A highly integrated modular european spaceborne dual frequency GPS-receiver, NAVITEC’2006, 11–13 December 2006, NoordwijkGoogle Scholar
  22. Rizos C, Stolz A (1985) Force modeling for GPS satellite orbits, 1st international symposium precise positioning with GPS, vol 1. Rochville, USA, pp 87–98,Google Scholar
  23. Tapley B D, Schutz B E, Born G (2004), Statistical orbit determination. Elsevier, Amsterdam Google Scholar
  24. Toral M, Stocklin F, Bar-Sever Y, Young L, Rush J (2006) Extremely accurate on-orbit position accuracy using NASA’s tracking and data relay satellite system (TDRSS), AIAA 2006–5312, 24th AIAA international communications satellite systems conference (icssc), 11–14 June 2006, San Diego, CAGoogle Scholar
  25. Vallado DA (2001) Fundamentals of astrodynamics and applications, space technology library, 2nd edn. Kluwer, DordrechtGoogle Scholar
  26. Warren DLM, Raquet JF (2003) Broadcast vs precise GPS ephemerides: a historical perspective. GPS Solut 7:151–156CrossRefGoogle Scholar
  27. Williams J, Lightsey EG, Yoon SP, Schutz RE (2002) Testing of the ICESat BlackJack GPS receiver engineering model. In: Proceedings of the ION-GPS-2002, 24–27 September 2002, Portland, OregonGoogle Scholar
  28. Yunck TP (1996) Orbit determination. In: Parkinson BW, Spilker JJ (eds) Global positioning system. Theory and Applications AIAA Publications, Washington DCGoogle Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.German Space Operations CenterDeutsches Zentrum für Luft- und RaumfahrtWeßlingGermany
  2. 2.Research Group of Astronomy and GeomaticsTechnical University of CataloniaBarcelonaSpain

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