Spectrum, timing and PNT
Resilient PNT frameworks
Structured ways to assess and raise how well equipment resists, detects and recovers from PNT disruption.
We design and support.
US Executive Order 13905 · DHS Resilient PNT Conformance Framework
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Positioning, navigation and timing/
Resilient PNTSeveral sources, cross-checked, one trusted solution.
Resilient PNT, inside Positioning, navigation and timing: resilient PNT frameworks, terrestrial radionavigation (eLoran-type), time over fibre, terrestrial beacon systems and more. Every item is traced to its specification, from US Executive Order 13905 to DHS Resilient PNT Conformance Framework, and runs on the open Observatory Protocol.
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- At the frontier
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- Industries served
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At a glance
Resilient PNT frameworks
Structured ways to assess and raise how well equipment resists, detects and recovers from PNT disruption. In resilient PNT, part of Positioning, navigation and timing, the resilient PNT layer holds resilient PNT frameworks, drawn against US Executive Order 13905 and DHS Resilient PNT Conformance Framework and used beside inertial and multi-sensor navigation on the same sites.
Die probleem
Several sources, cross-checked, one trusted solution
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
- Specification
- US Executive Order 13905 · DHS Resilient PNT Conformance Framework
- Specification
- 3GPP TS 23.501 clause 5.27 (time synchronisation) · 3GPP TS 22.104
- Specification
- ITU-T G.8275.1 · IEEE 1588-2019
- Specification
- 3GPP TS 37.355 (TBS positioning)
- Standaarde
- US Executive Order 13905 · DHS Resilient PNT Conformance Framework · ITU-T G.8275.1 · IEEE 1588-2019
Components
- Geodetic GNSS station on a deep-drilled braced monument (generic class, no brand)
- Robotic total station in a monitoring shelter
- Slope stability radar on a trailer
- Haul truck with onboard network and autonomy kit
- Private LTE mast on a solar skid
- “AI tower in a box”
- PTP grandmaster clock with GNSS antenna
- Data hall row pair with cold-aisle containment
Interfaces
- Time and position
- GNSS 1PPS
Where it works
- 5G as a timing source
- Terrestrial beacon systems
In the story below
- The system, part by part
- Assembly
- Installation
- Deployment
- Connections
- Operation
- Failure and recovery
- Scale and federation
- What you get
Scenes · 13
Next steps
Plan a deploymentOpen the Field Deployment StudioSee Positioning, navigation and timingTalk to salesPositioning, navigation and timing · Resilient PNT
Several sources, cross-checked, one trusted solution
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
Resilient PNT frameworks
Structured ways to assess and raise how well equipment resists, detects and recovers from PNT disruption. In resilient PNT, part of Positioning, navigation and timing, the resilient PNT layer holds resilient PNT frameworks, drawn against US Executive Order 13905 and DHS Resilient PNT Conformance Framework and used beside inertial and multi-sensor navigation on the same sites.
- Specification
- US Executive Order 13905 · DHS Resilient PNT Conformance Framework
Resilient PNT
5G as a timing source
Delivering accurate time to devices over 5G for industrial and utility uses. In resilient PNT, part of Positioning, navigation and timing, the resilient PNT layer holds 5G as a timing source, drawn against 3GPP TS 23.501 clause 5.27 and 3GPP TS 22.104.
- Specification
- 3GPP TS 23.501 clause 5.27 (time synchronisation) · 3GPP TS 22.104
Resilient PNT
Time over fibre
Delivering time from a national or regional reference over terrestrial fibre as a GNSS-independent source. In resilient PNT, part of Positioning, navigation and timing, the resilient PNT layer holds time over fibre, drawn against ITU-T G.8275.1 and IEEE 1588-2019 and used beside optical clocks and quantum navigation sensors on the same sites.
- Specification
- ITU-T G.8275.1 · IEEE 1588-2019
Resilient PNT
Terrestrial beacon systems
Ground transmitters giving indoor and urban positioning and timing. In resilient PNT, part of Positioning, navigation and timing, the resilient PNT layer holds terrestrial beacon systems, drawn against 3GPP TS 37.355 and used beside signals-of-opportunity navigation on the same sites.
- Specification
- 3GPP TS 37.355 (TBS positioning)
Time and place
When and where, on every record
Every record made for resilient PNT carries its time, from a clock disciplined by satellite time or a PTP grandmaster, with the position and siting record of the station that made it. When time or position degrades, the record for resilient PNT says so, and every user downstream sees the same warning.
Resilient PNT
Terrestrial radionavigation
High-power low-frequency signals that are hard to jam and provide time and position independent of GNSS. In resilient PNT, part of Positioning, navigation and timing, the resilient PNT layer holds terrestrial radionavigation, drawn against US Executive Order 13905 and DHS Resilient PNT Conformance Framework and used beside LEO PNT on the same sites.
- Specification
- US Executive Order 13905 · DHS Resilient PNT Conformance Framework
Vertroue
Proved before it is trusted
A node joins a network for resilient PNT 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 resilient PNT carries a signature, so anyone downstream can check where a value came from.
Bewyse
Traced to its specifications
We trace each part of resilient PNT to its specification: US Executive Order 13905, DHS Resilient PNT Conformance Framework and ITU-T G.8275.1. We keep the versions, configurations and test results of resilient PNT as signed records, so a buyer or an auditor can check what was delivered against what was specified.
- Standaarde
- US Executive Order 13905 · DHS Resilient PNT Conformance Framework · ITU-T G.8275.1 · IEEE 1588-2019
Failure and recovery
When a node fails, the fleet knows first
When a node for resilient PNT 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 resilient PNT loses nothing and counts nothing twice.
How it scales
One base unit, repeated
A network for resilient PNT starts with one base node and the instruments it reads. A station adds power and radio, a site adds a relay and a fleet repeats the proven site, so capacity for resilient PNT grows by adding units, never by replacing what works.
What you get
Timing and positioning integrity
PTP grandmasters with GNSS holdover, interference detection and timing monitoring for networks and instruments. For resilient PNT, 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
Resilient PNT, planned with you
Tell us the sites, the systems resilient PNT 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 resilient PNT, and the plan grows from one site to the network you need.
Plan a deploymentOpen the Field Deployment StudioSee Positioning, navigation and timing
More presentations
See it from every side.
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 presentationsIn depth
Use case Highway corridor coverage and safety sensingUse case Wildfire camera and fire-weather nodeUse case Utility grid-edge private LTE and wildfire weatherUse case Avalanche detection siteExplainers
Explainer · Environment and climate Environment and climate — SectorsMethane fencelines, acoustic biodiversity grids, flux towers, river sondes and smoke networks: an interactive explainer with the method behind every number.Explainer · Communities and rural Communities and ruralCommunity cellular coverage on real terrain, fixed-wireless Fresnel clearance, corridors, a remote microgrid sized from its load and interim public-safety broadband.Platform Positioning, navigation and timingA wrong timestamp is a wrong answerPlatform ConnectivityPublic networks were not built for this siteStories
Story · Timing and PNT Time as infrastructureA 5G cell must hold its phase within 3 µs of its neighbours, ±1.5 µs of a common reference; a synchrophasor’s one per cent vector error leaves room for only…Story · 6G and sensing Networks that senseThe framework for 6G names integrated sensing and communication as one of its usage scenarios: the same radio that carries data also measures range,…Story · Mountains and avalanche terrain Snowpack, slope and signalAvalanche forecasting reasons about the likelihood and size of avalanches on given terrain. The observations behind it come from a few stations in hard…Places and networks
Guided tour · Guided 3D tour Arctic stationA self-powered station on the ice: a microgrid, a low-orbit satellite terminal, a weather station, a GNSS monument and an edge node that holds data through the polar night.Guided tour · Guided 3D tour Orbit viewGround tracks of a sun-synchronous imager and three shells of a broadband constellation, computed from their orbits over a rotating Earth.Guided tour · Guided 3D tour Mountain valley siteA private 5G tower, an automatic weather station, a compact radar and a seismic vault on real alpine terrain, joined to an edge data centre that admits, times and publishes every…Network scene · Private 5G · Port Private 5G at a container portSmall cells on the yard lighting masts and a sector site on the operations building serve remote-controlled cranes and trucks among steel container stacks.Network scene · NTN · Satellite Satellite direct to device in a mountain valleyWhere the valley cell cannot reach, phones on the pass road connect straight to a low-orbit satellite, which relays through its feeder link to a gateway.Heritage observatories
Heritage observatory · United States · 1885 Blue Hill Meteorological ObservatoryAbbott Lawrence Rotch built a weather observatory on a hill south of Boston at his own expense and began observations on 1 February 1885.Heritage observatory · World ocean · 1999 Argo profiling float arrayAbout four thousand small robots drift through the oceans, sinking to 2,000 metres every ten days and rising to report temperature and salinity by satellite.Interactive tools
Interactive tool · Plan a site Field Deployment StudioTerrain, devices, coverage, viewshed, power and the best spot for a station, then a deployment request with the plan attached.01Wat dit is
Resilient PNT.
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
Terrestrial radionavigation (eLoran-type)
High-power low-frequency signals that are hard to jam and provide time and position independent of GNSS.
We design and integrate.
US Executive Order 13905 · DHS Resilient PNT Conformance Framework
Spectrum, timing and PNT
Time over fibre
Delivering time from a national or regional reference over terrestrial fibre as a GNSS-independent source.
We design, integrate and operate.
ITU-T G.8275.1 · IEEE 1588-2019
Spectrum, timing and PNT
Terrestrial beacon systems
Ground transmitters giving indoor and urban positioning and timing.
We design and integrate.
3GPP TS 37.355 (TBS positioning)
Spectrum, timing and PNT
5G as a timing source
Delivering accurate time to devices over 5G for industrial and utility uses.
We design and integrate.
3GPP TS 23.501 clause 5.27 (time synchronisation) · 3GPP TS 22.104
Spectrum, timing and PNT
Inertial and multi-sensor navigation
IMUs fused with odometry, vision and barometry to bridge GNSS outages.
We design and integrate.
DHS Resilient PNT Conformance Framework
Frontier · Spectrum, timing and PNT
LEO PNT
Navigation and timing from low-orbit constellations with stronger signals and faster geometry change than GNSS.
We design and integrate.
ITU RR Art. 5 (radionavigation-satellite service) · US Executive Order 13905
Frontier · Spectrum, timing and PNT
Optical clocks and quantum navigation sensors
Clocks and cold-atom inertial sensors that could hold time and position far longer without external signals.
We design and support.
BIPM CCTF roadmap towards the redefinition of the second
Frontier · Spectrum, timing and PNT
Signals-of-opportunity navigation
Positioning from existing cellular, broadcast and satellite signals not built for navigation.
We design.
3GPP TS 38.305
02Architecture
Where it sits, and what it speaks.
Resilient PNT 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
Every site joins one observing 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.
The observing grid
- Open solid earth instruments on the observing grid.
04In the field
Where this runs, sector by sector.
Deployment scenarios from the sector research that rely on resilient PNT.
TransportMaritime and port met-ocean with vessel tracking
Wave buoys and a receiver for vessel position broadcasts.05Open and enterprise
Open by default. Enterprise by contract.
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
- Timing budget method
- Reference station metadata rules
Enterprise, on this site
- Timing and positioning integrity
- Reference network design and operation
- Holdover engineering
06The rest of the line
Positioning, navigation and timing, area by area.
Positioning, navigation and timingGNSS reference networks
Continuously operating stations, tied to the geodetic frame.Positioning, navigation and timingTime distribution
PTP, SyncE and NTP, engineered to the budget.Positioning, navigation and timingGrandmasters and holdover
Reference clocks that keep time when the sky goes dark.Positioning, navigation and timingInterference detection
Jamming and spoofing found, located and logged.Bring us the site.
Survey, design, deployment and operation for resilient PNT. The form names who receives your details.
Talk to usAsk for a quote