GPS orbit determination using several reference

Masashi Nomura, Toshiyuki Tanaka, Masashi Yonekawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


GPS is used in many situations and the accuracy of measurement satisfies various services in several fields. However the improvement of accuracy is requested in many fields. For precise positioning by GPS, it is necessary to estimate high accuracy orbits of GPS satellites. Although orbits of GPS satellites are calculated from ephemeris, the orbits do not correspond with actual orbits. Therefore, we used several reference stations and calculated the orbits by the following new algorithm; inverse GPS and RARR (Range And Range Rate). Inverse GPS means that reference stations are considered as satellites and satellite as receiver. It is mainly used to trace animals or cars. RARR is the method of orbit estimation of other satellites and we use range rate to calculate the satellite orbit. In inverse GPS, we could calculate the orbits more accurately than the orbits from ephemeris. In RARR, we showed an effectiveness of our method.

Original languageEnglish
Title of host publicationSICE Annual Conference, SICE 2007
PublisherSociety of Instrument and Control Engineers (SICE)
Number of pages4
ISBN (Print)4907764286, 9784907764289
Publication statusPublished - 2007 Jan 1
EventSICE(Society of Instrument and Control Engineers)Annual Conference, SICE 2007 - Takamatsu, Japan
Duration: 2007 Sept 172007 Sept 20

Publication series

NameProceedings of the SICE Annual Conference


OtherSICE(Society of Instrument and Control Engineers)Annual Conference, SICE 2007


  • GPS(Global Positioning System)
  • Inverse GPS
  • Orbit
  • RARR
  • Reference station

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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