The Sentinel-3 orbit has a revisit time of 27 days providing global coverage of topography data at mesoscale (inter-track distance at the Equator 104 km using one satellite), with a primary orbit sub-cycle of approximately 4 days, as described in Table 1. In a two-satellite configuration, after one complete cycle, the inter-track separation is reduced to 52 km at the Equator.
Figure 1: Sentinel-3 Subcycle - 4 days - 57 orbits. Europe Map (Credit: isardSAT)
Figure 2: Sentinel-3 Subcycle - 27 days - 385 orbits. Europe Map (Credit: isardSAT)
Figure 3: Sentinel-3 Subcycle - 4 days - 57 orbits. World Map (Credit: isardSAT)
Figure 4: Sentinel-3 Subcycle - 27 days - 385 orbits. World Map (Credit: isardSAT)
Ground track separation at Equator | ||
Constellation | 4 days | 27 days |
Sentinel-3A | min= 104 km max= 728 km |
104 km |
Sentinel-3A and B | min= 57 km max= 671 km |
52 km |