Spectrum, timing and PNT
GNSS interference monitoring
Fixed sensors that detect and characterise GNSS interference near critical sites; detection and reporting only.
We design, deploy and operate.
ICAO Doc 9849 (GNSS Manual) · ITU RR Art. 15
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Interference detection: a jammer in a van located from three monitoring stations. The loop, step by step: 1. Three antennas ring a stretch of road. 2. The chain from source to console stands ready. 3. A vehicle carrying a jammer drives by. 4. Each antenna sees the noise at its own moment. 5. Time and place are fixed to every sample. 6. Arrival times reach the edge. 7. Relays carry the packets without reading them. 8. The edge verifies every signature first. 9. The edge triangulates the source on the road. 10. Only a confirmed result leaves the edge. 11. The enforcement desk receives the position. 12. The console shows the evidence with the alert. 13. The jammer’s track is followed to the stop. 14. Sensors check that the response worked. 15. The whole chain is archived for audit. 16. Everything settles back to idle.
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Three antennas ring a stretch of road
Nexus Observatory/
Positioning, navigation and timing/
Interference detectionInterference detection, inside Positioning, navigation and timing: GNSS interference monitoring, spoofing detection, jammer location to support enforcement, timing anomaly detection and more. Every item is traced to its specification, from ICAO Doc 9849 (GNSS Manual) to ITU RR Art. 15, and runs on the open Observatory Protocol.
Plan with usArchitectureThe protocolAt a glance
Fixed sensors that detect and characterise GNSS interference near critical sites; detection and reporting only. In interference detection, part of Positioning, navigation and timing, the interference, jamming and spoofing detection layer holds GNSS interference monitoring, drawn against ICAO Doc 9849 and ITU RR Art.
Die probleem
Positions drive autonomous trucks; timestamps order every event in a network. When a receiver is jammed or spoofed, both can be wrong while looking perfectly normal. Integrity has to be designed and measured, because a degraded signal rarely announces itself to the systems that depend on it.
Key facts
Components
Interfaces
Where it works
In the story below
Scenes · 13
Next steps
Plan a deploymentOpen the Field Deployment StudioSee Positioning, navigation and timingTalk to salesPositioning, navigation and timing · Interference detection
Positions drive autonomous trucks; timestamps order every event in a network. When a receiver is jammed or spoofed, both can be wrong while looking perfectly normal. Integrity has to be designed and measured, because a degraded signal rarely announces itself to the systems that depend on it.
What it does
Fixed sensors that detect and characterise GNSS interference near critical sites; detection and reporting only. In interference detection, part of Positioning, navigation and timing, the interference, jamming and spoofing detection layer holds GNSS interference monitoring, drawn against ICAO Doc 9849 and ITU RR Art.
Interference
Multi-element and null-steering antennas that reduce the effect of interference on receivers. In interference detection, part of Positioning, navigation and timing, the interference, jamming and spoofing detection layer holds interference-resistant antennas, drawn against DHS Resilient PNT Conformance Framework. We build it into every site for interference detection against that standard, and keep its version and its test results on the site’s record.
Interference
Locating jamming sources and passing evidence to the regulator, which holds enforcement authority. In interference detection, part of Positioning, navigation and timing, the interference, jamming and spoofing detection layer holds jammer location to support enforcement, drawn against Radiocommunication Act and ITU RR Appendix 10.
Interference
Watching time error and source agreement so a bad reference is rejected before it spreads. In interference detection, part of Positioning, navigation and timing, the interference, jamming and spoofing detection layer holds timing anomaly detection, drawn against ITU-T G.8273.2 and IETF RFC 7384.
Interference
Signal-level checks, authentication and cross-checks with other sources that flag counterfeit GNSS signals. In interference detection, part of Positioning, navigation and timing, the interference, jamming and spoofing detection layer holds spoofing detection, drawn against Galileo OSNMA SIS ICD and DHS Resilient PNT Conformance Framework and used beside red line: no jamming or spoofing capability on the same sites.
Vertroue
A node joins a network for interference detection only after its hardware root of trust answers an attestation challenge. Its keys stay in secure hardware, its software arrives signed and every record it makes for interference detection carries a signature, so anyone downstream can check where a value came from.
Bewyse
We trace each part of interference detection to its specification: ICAO Doc 9849, ITU RR Art. 15 and Galileo OSNMA SIS ICD. We keep the versions, configurations and test results of interference detection as signed records, so a buyer or an auditor can check what was delivered against what was specified.
Operations
The operations console shows every node of a network for interference detection with its state, its plan and its evidence. An alert arrives with its data and a runbook, acknowledging it opens a work order, and an incident for interference detection closes only when the operator records the cause and verifies the fix.
Failure and recovery
When a node for interference detection goes silent or a sensor drifts, the node buffers its data and fails over to a second link where the site has one. The alert carries the evidence a responder needs, and the record for interference detection loses nothing and counts nothing twice.
Bywerkings
Software and configuration reach a fleet for interference detection in rings: one canary site first, then a few, then all, each ring gated on health and data completeness. A failed gate stops the wave, and each node for interference detection returns to its last good release without a site visit.
What you get
PTP grandmasters with GNSS holdover, interference detection and timing monitoring for networks and instruments. For interference detection, it goes to carriers, utilities, financial infrastructure and observatories as hardware and software or a managed service, sized to the sites they run.
Talk to salesNext step
Tell us the sites, the systems interference detection must work with and the outcome you need, with a map or a list of addresses if you have one. An engineer replies with a survey proposal, a design and a scope for interference detection, and the plan grows from one site to the network you need.
Plan a deploymentOpen the Field Deployment StudioSee Positioning, navigation and timingMore presentations
Each opens as a full-screen presentation: deeper pages on the same subject, explainers, stories, guided tours of the places, network scenes and the observatories that came before.
All presentations01Wat dit is
The shared foundations every network and sensor depends on: how spectrum is licensed, shared and monitored, GNSS positioning and its corrections, packet timing with PTP and SyncE, grandmasters and holdover, resilient PNT alternatives, and the detection of interference, jamming and spoofing. Each technology below carries what it is, what we do with it, and the standard it is drawn against.
Spectrum, timing and PNT
Fixed sensors that detect and characterise GNSS interference near critical sites; detection and reporting only.
We design, deploy and operate.
ICAO Doc 9849 (GNSS Manual) · ITU RR Art. 15
Spectrum, timing and PNT
Signal-level checks, authentication and cross-checks with other sources that flag counterfeit GNSS signals.
We design, integrate and operate.
Galileo OSNMA SIS ICD · DHS Resilient PNT Conformance Framework
Spectrum, timing and PNT
Locating jamming sources and passing evidence to the regulator, which holds enforcement authority.
We operate and support.
Radiocommunication Act (Canada) · ITU RR Appendix 10
Spectrum, timing and PNT
Watching time error and source agreement so a bad reference is rejected before it spreads.
We design and operate.
ITU-T G.8273.2 · IETF RFC 7384
Spectrum, timing and PNT
Multi-element and null-steering antennas that reduce the effect of interference on receivers.
We integrate.
DHS Resilient PNT Conformance Framework
Spectrum, timing and PNT
Sharing detected disruption with aviation and marine users through the proper authorities.
We operate and support.
ICAO Doc 9849 (GNSS Manual)
Spectrum, timing and PNT
This work is limited to detection, location and resilience; no transmitter that denies or falsifies PNT is designed or deployed.
We design.
Radiocommunication Act (Canada) · ITU RR Art. 15
02Architecture
Interference detection draws on the spectrum below; the highlighted layers carry this area, and the protocol functions it speaks are marked.
Spectrum regimes and access
9
Spectrum monitoring and interference management
8
GNSS positioning and augmentation
9
Packet timing: PTP, SyncE and NTP
10
Grandmasters, reference clocks and holdover
7
Resilient PNT
9
Interference, jamming and spoofing detection
7
01Sluit aan Identity, attestation quote, signed policy.
02Admit Admitted for a stated scope, nothing wider.
03Beskryf What, where, how and by whom, with calibration.
04Time One clock across the grid, with its error bound.
05Observe Every value with quality and provenance.
06Qualify Tested against the specification, state on record.
07Federate Signed exchange across grids and trust domains.
08Orchestrate Software and configuration by signed plan.
09Correct A correction marks what depends on it and publishes a new version.
10Exchange Products reach people and applications through versioned interfaces.
11Prove Signed proof receipts that an independent verifier can check.
12Exit and decommission An open exit path, and a record that closes.
03On the grid
The open networks on the grid today, over real relief and the geodesic cells we count them into, filtered to the solid earth domain this area serves. A site built here enrols into the same grid.
04In the field
Deployment scenarios from the sector research that rely on interference detection.
Industrial05Open and enterprise
The open counterpart lives on the main site for anyone to read and run. The enterprise service is designed, deployed and operated with you, under contract.
Open, on the main site
Enterprise, on this site
06The rest of the line
Survey, design, deployment and operation for interference detection. The form names who receives your details.
Talk to usAsk for a quoteInterference detection, inside Positioning, navigation and timing: GNSS interference monitoring, spoofing detection, jammer location to support enforcement, timing anomaly detection and more. Every item is traced to its specification, from ICAO Doc 9849 (GNSS Manual) to ITU RR Art. 15, and runs on the open Observatory Protocol.
The open counterpart lives on the main site for anyone to read and run. The enterprise service is designed, deployed and operated with you, under contract.