1999
DOI: 10.1109/5.736340
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GPS IIF-the next generation

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Cited by 65 publications
(32 citation statements)
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“…In the current GPS system (where the satellites have an altitude of 20 000 km), the errors in the ephemeris data result in a UERE of about ±2.5 m [12,13]. For the new system, however, the altitude of the satellites is much smaller; specifically, 3180 km.…”
Section: Ephemeris Errorsmentioning
confidence: 99%
“…In the current GPS system (where the satellites have an altitude of 20 000 km), the errors in the ephemeris data result in a UERE of about ±2.5 m [12,13]. For the new system, however, the altitude of the satellites is much smaller; specifically, 3180 km.…”
Section: Ephemeris Errorsmentioning
confidence: 99%
“…The orientation of the spacecraft coordinate system is shown in Fig. 4 based on design drawings contained in Fisher and Ghassemi (1999) and Dorsey et al (2006). The direction of the positive x-axis can most easily be identified from the placement of the large auxiliary payload receive antenna, which extends from the Àx-face.…”
Section: Gpsmentioning
confidence: 99%
“…To de-correlate them, measurements other than pseudo-range code and carrier phase may be used to determine GEO satellites' orbits. For example, GEO single-satellite precise orbit determination (SPOD) using satellite laser ranging (SLR) data and two-way C-band ranging is able to obtain the orbital error of about 3 m evaluated by orbital overlapping, with C-band ranging data fitting root-mean-squares (RMS) of 0.205 m, and SLR data fitting of about 0.133 m. For 2-hour orbital prediction, radial error is about 0.373 m [1][2][3][4].…”
Section: Introductionmentioning
confidence: 99%