Kinematic Orbit Determination
Kinematic Orbit Determination (KOD) for the Swarm-A LEO satellite
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This MATLAB package performs undifferenced kinematic orbit determination for the Swarm-A LEO satellite from dual-frequency GPS observations. The estimator is an ionosphere-free float precise point positioning (PPP) solution: Hatch-smoothed IF code provides the absolute reference, and float IF carrier-phase ambiguities provide decimeter-level continuity.
GPS satellite orbits and clocks come from CODE MGEX precise products. The Swarm precise SP3 orbit is used only for final accuracy assessment and is never ingested by the estimator.
References and conventions
- Hatch, R. (1982), code-carrier smoothing.
- RTKLIB precise ephemeris interpolation and geometric-distance conventions.
- IGS ANTEX absolute antenna phase-center model.
- CODE MGEX final orbits, 30-second clocks, and observable-specific biases.
- Carrier-phase wind-up and ionosphere-free float PPP for LEO kinematic orbit determination.
Cite As
Meysam Mahooti (2026). Kinematic Orbit Determination (https://www.mathworks.com/matlabcentral/fileexchange/184322-kinematic-orbit-determination), MATLAB Central File Exchange. Retrieved .
General Information
- Version 1.1.0 (41.8 MB)
MATLAB Release Compatibility
- Compatible with any release
Platform Compatibility
- Windows
- macOS
- Linux
