Orbit determination performances using single- and double-differenced methods: SAC-C and KOMPSAT-2

Details Orbit determination performances using single- and double-differenced methods: SAC-C and KOMPSAT-2 Orbit determination performances using single- and double-differenced methods: SAC-C and KOMPSAT-2

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011adspr..47..138h&link_type=abstract

Advances in Space Research, Volume 47, Issue 1, p. 138-148.

Computer Science

Scientific paper

In this paper, Global Positioning System-based (GPS) Orbit Determination (OD) for the KOrea-Multi-Purpose-SATellite (KOMPSAT)-2 using single- and double-differenced methods is studied. The requirement of KOMPSAT-2 orbit accuracy is to allow 1 m positioning error to generate 1-m panchromatic images. KOMPSAT-2 OD is computed using real on-board GPS data. However, the local time of the KOMPSAT-2 GPS receiver is not synchronized with the zero fractional seconds of the GPS time internally, and it continuously drifts according to the pseudorange epochs. In order to resolve this problem, an OD based on single-differenced GPS data from the KOMPSAT-2 uses the tagged time of the GPS receiver, and the accuracy of the OD result is assessed using the overlapping orbit solution between two adjacent days. The clock error of the GPS satellites in the KOMPSAT-2 single-differenced method is corrected using International GNSS Service (IGS) clock information at 5-min intervals. KOMPSAT-2 OD using both double- and single-differenced methods satisfies the requirement of 1-m accuracy in overlapping three dimensional orbit solutions. The results of the SAC-C OD compared with JPL’s POE (Precise Orbit Ephemeris) are also illustrated to demonstrate the implementation of the single- and double-differenced methods using a satellite that has independent orbit information available for validation.

Affiliated with

Also associated with

No associations

Rating

Orbit determination performances using single- and double-differenced methods: SAC-C and KOMPSAT-2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Orbit determination performances using single- and double-differenced methods: SAC-C and KOMPSAT-2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbit determination performances using single- and double-differenced methods: SAC-C and KOMPSAT-2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1207387