TY - JOUR
T1 - Determination of CHAMP orbit from onboard GPS double-difference phase data with dynamic method
AU - Guo, Jinyun
AU - Hwang, Chein-way
AU - Hu, Jianguo
AU - Li, Jiancheng
PY - 2006/3/5
Y1 - 2006/3/5
N2 - In order to determine the CHAMP's orbit, the onboard GPS data of CHAMP, the GPS data of IGS tracking stations, EOP, SGO and time data are necessary. The GPS data should be pre-processed to correct the clock error, solve the ambiguity, detect the cycle slips, determine the satellite attitude, and calculate the antenna phase center offset and correction. Then the air-ground GPS double-difference phase observations are constructed. The CHAMP's orbit is really determined with the dynamic method. Comparing with the PSO from German GFZ, the precision (RMS) in the radial direction is 0.285 7 m. For the 1-day overlapping orbit, the RMS of radial orbit difference is 0.095 8 m. Comparing the orbit end-points, the mean difference of radial orbit is 0.066 6 m.
AB - In order to determine the CHAMP's orbit, the onboard GPS data of CHAMP, the GPS data of IGS tracking stations, EOP, SGO and time data are necessary. The GPS data should be pre-processed to correct the clock error, solve the ambiguity, detect the cycle slips, determine the satellite attitude, and calculate the antenna phase center offset and correction. Then the air-ground GPS double-difference phase observations are constructed. The CHAMP's orbit is really determined with the dynamic method. Comparing with the PSO from German GFZ, the precision (RMS) in the radial direction is 0.285 7 m. For the 1-day overlapping orbit, the RMS of radial orbit difference is 0.095 8 m. Comparing the orbit end-points, the mean difference of radial orbit is 0.066 6 m.
KW - CHAMP
KW - Dynamic method
KW - GPS double-difference phase data
KW - Satellite orbit determination
UR - http://www.scopus.com/inward/record.url?scp=33645912940&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33645912940
SN - 1671-8860
VL - 31
SP - 213
EP - 217
JO - Geomatics and Information Science of Wuhan University
JF - Geomatics and Information Science of Wuhan University
IS - 3
ER -