OpenSAR program · interference findings
Find the denial.
Refuse the fiction.
A measured archive signature from two NOAA CORS receivers that follows the published Jammertest schedule. Detection and schedule attribution are established; emitter identity and position are not.
Measured findings console
One event. Five honest views.
INSTRUMENT-SELECTION RESULT
Sentinel-1 cannot see this exercise.
Band miss494.6 MHz
Orbit crossings07:00 / 19:00
Exercise22:00–02:30
The GNSS carriers are outside the C-band passband and the night exercise cannot overlap a dawn/dusk sun-synchronous crossing.
RIGHT INSTRUMENT Ground NOAA CORS receivers on the affected L-band carriers.
INTERFERENCE SIGNATURE · NOT DEVICE IDENTITY
schedule-keyed GNSS denial signature
REFUSES Stable transmitter or portable device identity. These features characterize the observed event family.
CRPA SPATIAL SIGNATURE · EXTERNAL MEASURED ARCHIVE
One emitter can still occupy two spatial modes.
Snapshots36,186
Array4 × 1024
Observed rankTWO
The second spatial mode changes with site and falls to the random-vector control across areas, supporting a scene contribution rather than fixed array coupling.
FINGERPRINTevent family scene relative · scene-relative, not portable identity.
BEARINGElement-space direction only; degrees are not established.
POSITIONnot established; no calibrated bearing, range, or intersection.
SCHEDULE KEYING · TWO RECEIVERS
The breaks carry more proof than the depth.
22:00
ON23:30
RECOVERED00:30
RECOVERED01:30
NO RECOVERY02:30
END
ON23:30
RECOVERED00:30
RECOVERED01:30
NO RECOVERY02:30
END
Two receivers at different ranges agreed on which scheduled breaks recovered and which did not.
POSITION CLAIM · NOT ESTABLISHED
Three attempts. Three useful refusals.
multilateration
refusedOnly two receivers detected; terrain and radio horizon—not range—gated visibility.
path-loss fit
refusedThe implied exponent is 0.533, showing the detector is saturated and amplitude does not carry usable distance.
degradation-cone apex
refusedA horizon boundary is a paraboloid, while this control is power-limited and approximately cylindrical.
NEXT INSTRUMENTA coherent GNSS antenna array or CRPA retaining per-element complex phase for direction and wavefront-curvature tests.
Catalog boundary
Characterized does not mean identified.
- A jamming signature is not a stable transmitter identity.
- Detection and schedule attribution do not establish emitter position.
- A quiet C/N0 detector does not rule out spoofing.
- Ground GNSS observations are not coherent SAR or monostatic k-space samples.