HR: 1340h
AN: G33A-0905    [Abstracts]
TI: Precise GPS baseline solutions for the tandem satellites of FORMOSAT- 3/COSMIC
AU: * Tseng, T
EM: bon.cv93g@nctu.edu.tw
AU: Hwang, C
EM: cheinway@mail.nctu.edu.tw
AB: In the early phase of the FORMOSAT-/COSMIC (FC) mission, spacecrafts FM3 and FM4 will fly in tandem for at least 13 months at an altitude of 525 km. The separation between FM3 and FM4 is about 250 km, similar to that of the GEACE-A and B satellites. We experiment with both float and fixed ambiguity solutions using doubled differences of phases to solve for the baseline vectors of FM3 and FM4. The accuracy of baseline vectors from such solutions is better than 1 cm, and outperforms the 2-cm kinematic orbits of FORMOSAT-/COSMIC, the later being based on zero differenced phases. Due to cancellation of common-mode perturbing forces, use of baseline vectors of FM3-FM4 will improve gravity harmonic coefficients at degrees below 40 over current existing gravity models. This paper will present the technique of our baseline solutions, accuracy assessments and prospects of gravimetric applications of FM3-FM4 baseline vectors.
DE: 1200 GEODESY AND GRAVITY
DE: 1214 Geopotential theory and determination (0903)
DE: 1225 Global change from geodesy (1222, 1622, 1630, 1641, 1645, 4556)
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
DE: 1241 Satellite geodesy: technical issues (6994, 7969)
SC: Geodesy [G]
MN: 2007 Fall Meeting