Every input, every license, every attribution.
DebrisGuard runs on public data. No proprietary feeds, no black-box inputs, no NDAs you didn't sign. If a source ever becomes pay-walled, we say so on this page within 24 hours.
Catalog & orbital state
Celestrak General Perturbations (GP) catalog required
Master public catalog of TLEs for ~30,000 active and inactive objects. Used as the canonical "what's up there" feed.
Space-Track GP & GP-history required
Authoritative US Space Force TLE feed plus historical GP records. Used to derive the manoeuvre signal (Δ MEAN_MOTION over consecutive epochs) and back-fill Sentinel-mode traces.
Space-Track SATCAT required
Object metadata: name, country, launch date, RCS class, current decay flag.
Re-entry & conjunction
Space-Track Decay Messages (TIP) required
Operator predictions for upcoming re-entries. Powers the Decay-Watch panel and the catalog-anomaly positive-set ground truth.
Space-Track Public Conjunction Data Messages (CDM) optional
Foster-2D collision probabilities for conjunctions above the public-CDM threshold. The endpoint is known-flaky upstream; missing data is not allowed to suppress an alert from any other modality.
Radio frequency
RadioML 2018.01A required
24-class modulation dataset with synthetic and over-the-air captures. Trains the rf-carrier 1-D CNN classifier; OOD score on low max-softmax flags unattributed RF emissions.
SatNOGS DB & observations optional
Community-operated radio observations of LEO satellites. Used to confirm RF presence/absence on watchlist objects.
Optical
SGP4-anchored synthetic frames derived
Star-field background + simulated streaks generated by propagating real TLEs at observatory geometry. Trains the YOLOv8n streak detector to ~0.95 mAP50.
Reference cutout patches (in-distribution) derived
Patch-level "expected" snapshots that condition the ViT-B/16 Mahalanobis OOD detector.
Auxiliary metadata
DISCOSweb optional
Physical properties (mass, area, shape, hard-body radius) used to refine collision-probability calculations. Gracefully absent — DebrisGuard falls back to a 5 m default HBR.
What we don't use
| Source | Why we exclude it |
|---|---|
| LeoLabs commercial conjunction feed | Paywalled · would break the open-data guarantee |
| ExoAnalytic optical track-files | Paywalled · selective NDA terms |
| NORAD high-accuracy SP-vectors | Restricted access · only available to allied governments |
| Any "proprietary AI signal" | Not reproducible by customers — not allowed to fire alerts |