NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Preliminary GPS orbit determination results for the Extreme Ultraviolet ExplorerA single-frequency Motorola Global Positioning System (GPS) receiver was launched with the Extreme Ultraviolet Explorer mission in June 1992. The receiver utilizes dual GPS antennas placed on opposite sides of the satellite to obtain full GPS coverage as it rotates during its primary scanning mission. A data set from this GPS experiment has been processed at the Jet Propulsion Laboratory with the GIPSY-OASIS 2 software package. The single-frequency, dual antenna approach and the low altitude (approximately 500 km) orbit of the satellite create special problems for the GPS orbit determination analysis. The low orbit implies that the dynamics of the spacecraft will be difficult to model, and that atmospheric drag will be an important error source. A reduced-dynamic solution technique was investigated in which ad hoc accelerations were estimated at each time step to absorb dynamic model error. In addition, a single-frequency ionospheric correction was investigated, and a cycle-slip detector was written. Orbit accuracy is currently better than 5 m. Further optimization should improve this to about 1 m.
Document ID
19950049800
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gold, Kenn
(Colorado Univ. Boulder, CO, US, United States)
Bertiger, Willy
(Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA, US, United States)
Wu, Sien
(Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA, US, United States)
Yunck, Tom
(Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA, US, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Spaceflight mechanics, 1993; AAS(AIAA Spaceflight Mechanics Meeting, 3rd, Pasadena, CA, Feb. 22-24, 1993, Parts 1 & 2 . A95-81344
Publisher: American Astronautical Society (Advances in the Astronautical Sciences, Vol. 82, Pts. 1 & 2)
ISSN: 0065-3438
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Accession Number
95A81399
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available