--- title: "Cities: resources | Nexus Observatory" description: "Guides, training and glossary for cities and urban systems: Suburb grid edge, Lpwan mesh, Edge ai and Cities: what must be measured." url: https://observatory.global/industries/cities/resources/ publisher: Nexus Observatory Inc. updated: 2026-11-02 --- [Nexus Observatory](https://observatory.global/) / [Cities](https://observatory.global/industries/cities/) / **Resources** # Resources for cities. Learning paths, the standards cited across this site and the explainers that show the systems in 3D. [Plan a deployment](https://observatory.global/contact/deployment/) [Use cases](https://observatory.global/industries/cities/use-cases/) [Open the explainer](https://observatory.global/industries/cities/explainer/) 1. Cities · Resources The city, measured block by block Street-level flood depth, air quality and heat, mobility and noise, carried on a municipal sensing and connectivity layer, with twins of the streets they sit in and open data residents can read. Needs: street flooding, air quality and urban heat, structural condition of public assets, connectivity for municipal sensors and open data for residents. 2. Story City block A worked story shows how a cities deployment runs end to end, from the instruments and the radio to the edge, the console and the people who act on the result. Each story names its sources and the standards it relies on. [Read the stories](https://observatory.global/stories/) 3. Story Suburb grid edge A worked story shows how a cities deployment runs end to end, from the instruments and the radio to the edge, the console and the people who act on the result. Each story names its sources and the standards it relies on. [Read the stories](https://observatory.global/stories/) 4. Story Lpwan mesh A worked story shows how a cities deployment runs end to end, from the instruments and the radio to the edge, the console and the people who act on the result. Each story names its sources and the standards it relies on. [Read the stories](https://observatory.global/stories/) 5. Story Edge ai A worked story shows how a cities deployment runs end to end, from the instruments and the radio to the edge, the console and the people who act on the result. Each story names its sources and the standards it relies on. [Read the stories](https://observatory.global/stories/) 6. What must be measured Cities: what must be measured Street flooding, air quality and urban heat, structural condition of public assets, connectivity for municipal sensors and open data for residents. Each is measured by instruments sited to recognised practice, read by a base node that stamps, checks and signs every value. 7. Trust Every node proves what it is A node joins only after its hardware root of trust answers an attestation challenge. Keys stay in secure hardware, software arrives signed, and every reading carries a signature, so its origin can be checked by anyone downstream without asking us. 8. Time and place Every reading carries when and where Readings are stamped against a disciplined clock, from satellite time or a PTP grandmaster, together with the station position and its siting record. When time or position is degraded, the record says so instead of hiding it, and every analyst downstream sees the same warning. 9. Updates Updates in rings, with rollback Software and configuration reach the fleet in rings: a canary site first, then a few, then all, each ring gated on health and data completeness. A failed gate stops the wave and returns each node to its last good release, without a site visit. 10. Operations Every node watched, every incident closed The operations console shows every node with its state, its plan and its evidence. Alerts arrive with their data and a runbook; acknowledging one opens a work order, and an incident closes only when the cause is recorded and the fix verified. 11. Field service One crew, from survey to repair The same crew surveys, installs, commissions, calibrates and repairs, working from the site's own record. Each visit updates it, so the next crew knows exactly what is there, when it was last checked and why it was changed. Spares and references are planned from that history. 12. What you get Municipal sensing and connectivity layers City-wide LPWAN or private 5G as a shared layer for public sensors and services. Delivered as managed service, for cities, regional governments. Scale: City-wide. Service levels are written as numbers you can measure on your own dashboard. Changes are versioned, tested and reversible. [Talk to sales](https://observatory.global/contact/sales-enquiry/) 13. Next step Plan a cities deployment Tell us the sites, the measurements and the people who will use them. We reply with a design and a scope for cities. An engineer replies with a survey proposal and a scope, and the plan grows from one site to the network you need, at your pace. [Plan a deployment](https://observatory.global/contact/deployment/) [Open the Studio](https://observatory.global/studio/) [Read the stories](https://observatory.global/stories/) **01** Learning paths ## From first principles to a commissioned site. **01** ### Academy The principles of observation, the protocol and the lifecycle of a site.[Start learning →](https://observatory.global/learn/) **02** ### Training and enablement Operator, crew and engineer training on the systems you own.[The training platform →](https://observatory.global/#lines) **03** ### Explainers The systems in 3D, chapter by chapter, drawn to scale.[Open the explainer →](https://observatory.global/industries/cities/explainer/) **02** Standards ## The standards cited on this site. - OGC SensorThings API 1.1 - Municipal open-data terms - EU Directive 2024/2881 (ambient air quality) - CEN/TS 17660 (sensor systems) - US EPA FEM/FRM reference methods **03** Explainer and stories ## See it at work. The industry in 3D, and field stories with the systems in each and the sources behind them. [Explainer Cities, explainedThe city, measured block by block.Open the explainer →](https://observatory.global/industries/cities/explainer/) [Dense city block The instrumented streetFour city blocks, read as an observing system: small cells on street poles, air-quality and heat sensors beside them, and an edge node that corrects, times…Read the story →](https://observatory.global/stories/city-block/) [Suburb The suburb as a power stationRooftop solar, home batteries and electric vehicles turn a residential street into thousands of small generators. Observing them is how a distribution grid…Read the story →](https://observatory.global/stories/suburb-grid-edge/) [LPWAN and mesh Kilometres on a coin cellMost environmental sensors send a few bytes a few times an hour. Low-power wide-area networks trade bandwidth for range and battery life; mesh networks…Read the story →](https://observatory.global/stories/lpwan-mesh/) [Edge AI inference Deciding at the edgeA model that detects smoke, flooding or a fault is most useful where the frame is captured. Running inference at the edge cuts the time to a decision and…Read the story →](https://observatory.global/stories/edge-ai/) [Digital twin of a site A digital twin that keeps its sourcesA digital twin is a model of a physical asset kept current by observation of it. The hard part is not the geometry; it is keeping every value in the model…Read the story →](https://observatory.global/stories/digital-twin-site/) **04** Terms ## What people search for in this industry. [air quality sensor network](https://observatory.global/technologies/) [low-cost sensor calibration](https://observatory.global/technologies/) [hyperlocal air quality](https://observatory.global/technologies/) [urban heat island sensors](https://observatory.global/technologies/) [flood sensors](https://observatory.global/technologies/) [smart city LoRaWAN](https://observatory.global/technologies/) [open data portal integration](https://observatory.global/technologies/) ## Bring us the site. Survey, design, deployment and operation for cities. The form names who receives your details. [Talk to us](https://observatory.global/contact/) [Plan a deployment](https://observatory.global/contact/deployment/) [Home](https://observatory.global/industries/cities/) [Use cases](https://observatory.global/industries/cities/use-cases/) [Specialized fields](https://observatory.global/industries/cities/fields/) [Solutions](https://observatory.global/industries/cities/solutions/) [Platforms](https://observatory.global/industries/cities/platforms/) [Systems and technologies](https://observatory.global/industries/cities/systems/) [Frontier](https://observatory.global/industries/cities/frontier/) [Open](https://observatory.global/industries/cities/open/) [Community](https://observatory.global/industries/cities/community/) [Countries](https://observatory.global/industries/cities/countries/) [Resources](https://observatory.global/industries/cities/resources/) [Contact](https://observatory.global/industries/cities/contact/) [Nexus Observatory](https://observatory.global/)**Cities** . The city, measured block by block.[Talk to us](https://observatory.global/contact/) Cities - [Overview](https://observatory.global/industries/cities/) - [Explainer](https://observatory.global/industries/cities/explainer/) - [Specialized fields](https://observatory.global/industries/cities/fields/) - [Use cases](https://observatory.global/industries/cities/use-cases/) - [Solutions](https://observatory.global/industries/cities/solutions/) - [Platforms](https://observatory.global/industries/cities/platforms/) - [Resources](https://observatory.global/industries/cities/resources/) - [Contact](https://observatory.global/industries/cities/contact/) Platforms - [Observatory Protocol](https://observatory.global/protocol/) - [Protocol & Grid](https://observatory.global/grid-services/) - [Software](https://observatory.global/software/) - [Hardware & power](https://observatory.global/hardware/) - [Sensors & instruments](https://observatory.global/sensors/) - [Connectivity](https://observatory.global/connectivity/) - 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