5 ms·
Ai2 has vessel detection models for Sentinel-1 and Sentinel-2 (ESA) along with Landsat 8, Landsat 9, and VIIRS Nighttime Lights (NASA/USGS/NOAA): - Sentinel-2
by letcree 5mo ago
Ai2 has vessel detection models for Sentinel-1 and Sentinel-2 (ESA) along with Landsat 8, Landsat 9, and VIIRS Nighttime Lights (NASA/USGS/NOAA):
- Sentinel-2 (10 m/pixel): https://github.com/allenai/rslearn_projects/blob/master/docs/sentinel2_vessels.md https://github.com/allenai/rslearn_projects/blob/master/docs...
- Landsat (15-30 m/pixel): https://github.com/allenai/rslearn_projects/blob/master/docs/landsat_vessels.md https://github.com/allenai/rslearn_projects/blob/master/docs...
- VIIRS Nighttime Lights: https://github.com/allenai/vessel-detection-viirs https://github.com/allenai/vessel-detection-viirs
I think you can see these vessel detections at https://app.skylight.earth/ https://app.skylight.earth/ ("Try out a limited version as a guest") but they seem to be delayed by 48 hours.
VIIRS is very low resolution but you can make out vessels with reasonable accuracy in the night-time images.
VIIRS covers most locations at least once per day, but the other sensors capture a given location only once per 5-10 days (although when combined, Sentinel-1/Sentinel-2/Landsat should provide close-to-daily coverage).
- verdverm 5mo agoThere is also a lot of jamming, manipulating, and fake AIS broadcasting going on https://windward.ai/blog/gps-jamming-disrupts-1100-ships-in-the-middle-east-gulf/ https://windward.ai/blog/gps-jamming-disrupts-1100-ships-in-...