Draw an area on the map and select a date to begin searching for aircraft in Sentinel-2 imagery.
No area drawn
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Quartet's detections are automatic and it can make mistakes. Please double-check its findings before sharing.
Export task data
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Name this area
Give it a name, or dismiss to save with the default.
How to use Quartet
Quartet finds aircraft in Sentinel-2 satellite imagery — a moving plane leaves four colored dots in a line, while ground objects stay a single point. Draw an area, pick a date, and search.
1. Draw an area
Rectangle tool — click the square icon at the top-left of the map, then drag to draw. A new rectangle replaces the old one.
Up to 225,000 km². Airports and busy traffic corridors have the most aircraft.
Search bar — type a place name or coordinates ("51.47, -0.45") to jump there.
2. Pick a date
The calendar fills with Sentinel-2 dates for your area. Green = clear, orange = partly cloudy.
Max cloud / Min coverage sliders filter which dates qualify.
Batch — switch to Batch and pick a start–end range to search every clear day in the window.
3. Search
Hit Search for Aircraft. It runs on the server, so you can close the tab — you'll get an email with a link, and it appears on the My Tasks page. Results load on the map when it finishes.
ADS-B (optional toggle) — cross-checks detections against historical flight tracks. Result tabs split them into Found / Missed / Unmatched (unmatched are often military or non-transponding).
4. Read results
Each detection is four colored dots plus a plane icon. Sidebar cards show speed, heading, and a thumbnail — click one to zoom to it.
Confidence slider filters by ML score (default 90%). Export the filtered set as GeoJSON or CSV.
Manage & save
My Tasks — every search, organized into folders. Per row: view results, copy a share link, re-run on another date, add notes, rename, or delete.
Saved Areas (header menu) — bookmark an area; loading one jumps to its most recent imagery.
Imagery: Sentinel-2 L2A (ESA / Copernicus) via Element 84, Microsoft Planetary Computer, and CDSE.