--- title: "Areas: Positioning and timing | Nexus Observatory" description: "Areas of the Positioning, navigation and timing platform: GNSS reference networks, Time distribution, Grandmasters and holdover and Resilient PNT." url: https://observatory.global/pnt/areas/ publisher: Nexus Observatory Inc. updated: 2026-11-07 --- [Nexus Observatory](https://observatory.global/) / [Positioning, navigation and timing](https://observatory.global/pnt/) / **Areas** # Positioning, navigation and timing, area by area. Each area of the platform has its own page: the systems in it, the standards it is drawn against, the industries it serves and how we deliver it. [Plan with us](https://observatory.global/pnt/contact/deployment/) [Technologies](https://observatory.global/pnt/technologies/) Areas · **5** Technologies · **59** Industries · **6** At a glance ## GNSS reference networks Continuously operating stations, tied to the geodetic frame. The page on GNSS reference networks sets out the technologies it uses, the standards they follow and how we deliver it. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. The problem ### Where and when, with the error bound The products and services of Positioning, navigation and timing start with GNSS reference networks, time distribution, grandmasters and holdover and resilient PNT. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. 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 - Interference detection - Resilient PNT In the story below 1. The system, part by part 2. Assembly 3. Installation 4. Deployment 5. Connections 6. Operation 7. Failure and recovery 8. Scale and federation 9. What you get Scenes · 13 Next steps [Plan a deployment](https://observatory.global/pnt/contact/deployment/) [Open the Field Deployment Studio](https://observatory.global/studio/) [See Positioning, navigation and timing](https://observatory.global/pnt/) [See Time distribution](https://observatory.global/pnt/time-distribution/) 1. Positioning, navigation and timing · Areas Where and when, with the error bound The products and services of Positioning, navigation and timing start with GNSS reference networks, time distribution, grandmasters and holdover and resilient PNT. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. 2. Area · GNSS reference networks GNSS reference networks Continuously operating stations, tied to the geodetic frame. The page on GNSS reference networks sets out the technologies it uses, the standards they follow and how we deliver it. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. [See GNSS reference networks](https://observatory.global/pnt/gnss-reference-networks/) 3. Area · Interference detection Interference detection Jamming and spoofing found, located and logged. The page on interference detection sets out the technologies it uses, the standards they follow and how we deliver it. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. [See Interference detection](https://observatory.global/pnt/interference-detection/) 4. Area · Grandmasters and holdover Grandmasters and holdover Reference clocks that keep time when the sky goes dark. The page on grandmasters and holdover sets out the technologies it uses, the standards they follow and how we deliver it. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. [See Grandmasters and holdover](https://observatory.global/pnt/grandmasters-and-holdover/) 5. Area · Resilient PNT Resilient PNT Several sources, cross-checked, one trusted solution. The page on resilient PNT sets out the technologies it uses, the standards they follow and how we deliver it. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. [See Resilient PNT](https://observatory.global/pnt/resilient-pnt/) 6. Time and place When and where, on every record On a network for Positioning, navigation and timing, when and where are part of every record: a disciplined clock, from satellite time or a PTP grandmaster, and the station's surveyed position. A degraded clock or position is written into the record for Positioning, navigation and timing, never hidden, and every user downstream sees the same flag. 7. Area · Time distribution Time distribution PTP, SyncE and NTP, engineered to the budget. The page on time distribution sets out the technologies it uses, the standards they follow and how we deliver it. GNSS reference stations tied to the geodetic frame, PTP and SyncE time distribution engineered to the budget, grandmasters and holdover that ride through outages, and resilient PNT that finds jamming and spoofing before a timestamp goes wrong. [See Time distribution](https://observatory.global/pnt/time-distribution/) 8. Operations Every node watched, every incident closed Operators of a network for Positioning, navigation and timing see every node at once: its state, its plan and its evidence, in one console. Each alert for Positioning, navigation and timing arrives with its data and a runbook, and its incident stays open until the operator records the cause and verifies the fix. 9. Failure and recovery When a node fails, the fleet knows first When something fails on a network for Positioning, navigation and timing, the fleet knows first: the node buffers its data and fails over to a second link where one exists. The alert for Positioning, navigation and timing carries what a responder needs to act, and the record keeps every value once, with nothing lost. 10. Updates Updates in rings, with rollback No change reaches a whole fleet for Positioning, navigation and timing at once: software and configuration go to one canary site first, then to a few, then to all. Each ring for Positioning, navigation and timing passes only on health and data completeness, and a failed check returns every node to its last good release. 11. How it scales One base unit, repeated A network for Positioning, navigation and timing grows from one proven unit: a base node, its instruments, then the power and radio that make it a station. A relay turns stations into a site, a fleet repeats the site in many places, and capacity for Positioning, navigation and timing rises with each unit added, never by replacing what works. 12. What you get Open where it can be, contracted where it must be Anyone can use and build on the protocol, the methods and the open data behind Positioning, navigation and timing, free of charge. Under contract, Nexus Observatory Inc. builds and runs the sites, fleets and data tiers for Positioning, navigation and timing, priced per site and per fleet, with service levels written as numbers. 13. Next step Positioning, navigation and timing, planned with you Tell us which products and services of Positioning, navigation and timing you need, for which sites and by when. An engineer replies with a survey proposal, a design and a scope for Positioning, navigation and timing, and the plan grows from one site to the network you need. [Plan a deployment](https://observatory.global/pnt/contact/deployment/) [Open the Field Deployment Studio](https://observatory.global/studio/) [See Positioning, navigation and timing](https://observatory.global/pnt/) 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 presentations](https://observatory.global/presentations/) ### In depth [Use case **Highway corridor coverage and safety sensing**](https://observatory.global/use-cases/highway-corridor/) [Use case **Avalanche detection site**](https://observatory.global/use-cases/avalanche-detection/) [Use case **Community cellular and sensing**](https://observatory.global/use-cases/community-cellular/) [Use case **Utility grid-edge private LTE and wildfire weather**](https://observatory.global/use-cases/utility-grid-edge/) ### Explainers [Explainer · Environment and climate **Environment and climate — Sectors** Methane fencelines, acoustic biodiversity grids, flux towers, river sondes and smoke networks: an interactive explainer with the method behind every number.](https://observatory.global/industries/climate/explainer/) [Explainer · Communities and rural **Communities and rural** Community cellular coverage on real terrain, fixed-wireless Fresnel clearance, corridors, a remote microgrid sized from its load and interim public-safety broadband.](https://observatory.global/industries/communities/explainer/) [Platform **Positioning, navigation and timing** A wrong timestamp is a wrong answer](https://observatory.global/pnt/) [Platform **Edge compute & AI** The archive is too late](https://observatory.global/edge-ai/) ### Stories [Story · Timing and PNT **Time as infrastructure** A 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…](https://observatory.global/stories/timing-pnt/) [Story · 6G and sensing **Networks that sense** The framework for 6G names integrated sensing and communication as one of its usage scenarios: the same radio that carries data also measures range,…](https://observatory.global/stories/sensing-networks-6g/) [Story · Mountains and avalanche terrain **Snowpack, slope and signal** Avalanche forecasting reasons about the likelihood and size of avalanches on given terrain. The observations behind it come from a few stations in hard…](https://observatory.global/stories/mountain-avalanche/) ### Places and networks [Guided tour · Guided 3D tour **Orbit view** Ground tracks of a sun-synchronous imager and three shells of a broadband constellation, computed from their orbits over a rotating Earth.](https://observatory.global/environments/orbit-view/) [Guided tour · Guided 3D tour **Arctic station** A 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.](https://observatory.global/environments/arctic-station/) [Guided tour · Guided 3D tour **Wildfire forest** Camera masts on the ridges, a weather station in the stand and a private cell: the red ground is what the ridge camera can see.](https://observatory.global/environments/wildfire-forest/) [Network scene · Private 5G · Port **Private 5G at a container port** Small cells on the yard lighting masts and a sector site on the operations building serve remote-controlled cranes and trucks among steel container stacks.](https://observatory.global/environments/networks/private5g-port/) [Network scene · NTN · Satellite **Satellite direct to device in a mountain valley** Where 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.](https://observatory.global/environments/networks/ntn-d2d/) ### Heritage observatories [Heritage observatory · United States · 1961 **World-Wide Standardized Seismograph Network** In the early 1960s the United States put identical seismographs, calibrated the same way, in more than a hundred places around the world and published the records on film for…](https://observatory.global/observatories/wwssn/) [Heritage observatory · Global network of about 150 stations; USGS and EarthScope (formerly IRIS) partnership · 1984 **Global Seismographic Network** About 150 digital broadband seismic stations in some 80 countries, sending data to open archives within minutes.](https://observatory.global/observatories/iris-gsn/) ### Interactive tools [Interactive tool · Plan a site **Field Deployment Studio** Terrain, devices, coverage, viewshed, power and the best spot for a station, then a deployment request with the plan attached.](https://observatory.global/studio/) **01** Areas ## Positioning, navigation and timing, area by area. Choose an area for its systems, standards, the industries it serves and how we deliver it. [01 GNSS reference networks Continuously operating stations, tied to the geodetic frame. Open the area →](https://observatory.global/pnt/gnss-reference-networks/) [02 Time distribution PTP, SyncE and NTP, engineered to the budget. Open the area →](https://observatory.global/pnt/time-distribution/) [03 Grandmasters and holdover Reference clocks that keep time when the sky goes dark. Open the area →](https://observatory.global/pnt/grandmasters-and-holdover/) [04 Resilient PNT Several sources, cross-checked, one trusted solution. Open the area →](https://observatory.global/pnt/resilient-pnt/) [05 Interference detection Jamming and spoofing found, located and logged. Open the area →](https://observatory.global/pnt/interference-detection/) **02** Open and enterprise ## Open by default. Enterprise by contract. The open layer lives on the main site, free to use and build on. Enterprise services are delivered under contract by Nexus Observatory Inc. 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 **03** On this site ## Where to go next. [Positioning, navigation and timing Technologies The layered map of what we build with. Open →](https://observatory.global/pnt/technologies/) [Positioning, navigation and timing Architecture Layers, functions and evidence. Open →](https://observatory.global/pnt/architecture/) [Positioning, navigation and timing Industries The industry sites built on this platform. Open →](https://observatory.global/pnt/industries/) [Positioning, navigation and timing Resources Explainer, stories, specification and forms. Open →](https://observatory.global/pnt/resources/) ## Bring us the site. We bring the survey, the design and the crew. The form names who receives your details. 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