DEAD·RECKONING: a GPS interference archive
A memory of where GPS goes dark.
Aircraft broadcast how much they trust their own GPS. Where many
aircraft at once report degraded satellite navigation, something on
the ground is interfering with it. This map remembers that, day by day.
Quiet:
faint teal is watched airspace: aircraft seen, GPS healthy.
Degraded:
brighter cells = many aircraft reporting degraded GPS (the signal).
Hatched: too few aircraft to
judge (not the same as "clear").
Outlined:
airspace closed or reduced-coverage: the instrument is blind here, and
that blindness is itself information.
Coverage
view (top-left): how heavily each area is watched, so you can
tell confidence from blindness.
Scrub the
timeline below to move through days.
Read it like an analyst. Three places, one sensor:
- Kaliningrad & the Baltic: chronic interference beside conflict.
- Central US: a quiet control; this is what "clear" looks like.
- US Southwest (White Sands): an identical signal, but
benign: scheduled, published GPS-test exercises. Same reading,
opposite meaning, which is why context, not color, is the analysis.