Use Google Earth to check a pass number for:
- Referenced oribt: Jason-3, Jason-2 (2008-Oct.2016), Jason-1 (before February 2009), Topex/Poseidon (before August 2002),
- Sentinel-3 (ESA delivered the kml file with S3 ground-track points with a time step of 10 seconds, please refer to ESA's website).
- Cryosat-2 (entire cycle)
- Saral, ERS-2 (geodesic phase) and Envisat (before October 22th 2010: orbit change),
- Envisat new orbit (theoretical tracks extension phase - beyond November 2010, not strictly repetitive),
- Interlaced orbit: Jason-2 (after Oct. 2016), Jason-1 (after february 2009) and Topex/Poseidon (after September 2002) ,
Summary: Topex/Poseidon was launched on 1992 on a referenced orbit which was assumed by Jason-1 (on December 2001) and OSTM/Jason-2 (on June 2008). At the end of the Jason-1's calibration phase on September 2002, Topex/Poseidon was shifted on a new orbit, called interleaved orbit, on the midway of its old ground tracks. In the same way, at the end of OSTM/Jason-2's calibration phase on January-February 2009, Jason-1 was also shifted on the same Topex/Poseidon interleaved orbit. In order to better suit for real-time applications, Jason-1 also undergone a temporal shift with a time lag of approximately 5 days with respect to OSTM/Jason-2. In other words, when Jason-1 begins a new cycle with the pass #001, OSTM/Jason-2 begins the pass #127 (on the same cycle). On Oct. 2016, this is the same for Jason-3 on the referenced orbit and Jason-2 on the interleaved orbit.
SWOT (to be launched on 2020): Scientific Orbit
Ground track and Swath files (.kml)
- SWOT_Science_sept2015_Nadir.kml : nadir ground track only.
- SWOT_Science_sept2015_Swath_60.kml : nadir ground track and external edges of the swath, at 60km.
- SWOT_Science_sept2015_Swath_10_60.kml : nadir ground track and internal and external edges of the swath, at 10km and 60 km.