polwarden ← Back to 2026-04-04 briefingSatellite Coverage
Normal 2026-04-04
Summary
Satellite analysis fresh (latest 2026-04-04 09:45:06 UTC).
Why this matters
Activity at military sites — vehicle movement, construction, equipment staging — can indicate preparation, rotation, or capability changes.
What we saw
Kaliningrad-Chkalovsk activity
Radar: No change Exposed ground detected Fuel activity 4%
Shaykovka-airbase activity
Radar: No change Exposed ground detected
Tver-Migalovo activity
Radar: Minor change Exposed ground detected Fuel activity 1%
Yelnya-garrison activity
Radar: No change
Bryansk-staging activity
Radar: No change Exposed ground detected Fuel activity 1%
Donskoye-missiles activity
Radar: No change Exposed ground detected
Baltiysk-naval activity
Radar: No change Fuel activity 3%
Chernyakhovsk-airbase activity
Radar: No change Exposed ground detected
Levashovo-airbase activity
Radar: No change Exposed ground detected Fuel activity 11%
Gusev-garrison activity
Radar: No change Exposed ground detected Fuel activity 2%
Kamenka-138th-MRB activity
Radar: No change Exposed ground detected Fuel activity 14%
Kronstadt-naval activity
Radar: Moderate change Fuel activity 5%
How sure we are
Last data: 2026-04-22 15:04 UTC
Basis: Sentinel-2 optical + Sentinel-1 SAR (revisit ~5 days)
Limitation: Cloud cover can block optical imagery. SAR provides backup but lower interpretability.
How we know
We analyze Sentinel-2 optical imagery (10m resolution) and Sentinel-1 SAR radar of monitored military sites. Changes are detected by comparing current imagery against seasonal baselines.
Primary source: Copernicus Sentinel-2 / Sentinel-1