Ushahidi
Identity and attestation
Hardware-rooted identity, with a quote checked at every join.
Global Privacy Control detected. We have honored it as your request to opt out of the sale and sharing of your personal information and of targeted advertising.Signal Global Privacy Control détecté. Nous l'avons respecté comme une demande d'opposition à la vente et à la communication de vos renseignements personnels ainsi qu'à la publicité ciblée.
Cookie policyPolitique relative aux témoins Privacy policyPolitique de confidentialité Do Not Sell or Share My Personal InformationNe pas vendre ni communiquer mes renseignements personnels
Your browser sent a Global Privacy Control signal. We treat it as a refusal for the purposes marked below, and those switches stay off.Votre navigateur a envoyé un signal Global Privacy Control. Nous le traitons comme un refus pour les finalités indiquées ci-dessous, et ces interrupteurs restent désactivés.
Needed for the site to work, to keep you signed in, to protect it from attacks and to remember your privacy choices and the settings you pick. Always on.Nécessaires au fonctionnement du site, pour vous garder connecté, le protéger contre les attaques et retenir vos choix de confidentialité et les réglages que vous choisissez. Toujours actifs.
Remember optional settings beyond the ones you pick yourself. Off until you allow it.Retenir des réglages facultatifs autres que ceux que vous choisissez vous-même. Désactivés tant que vous ne les autorisez pas.
Count visits and see how pages are used, so we can improve the site. Off until you allow it.Compter les visites et voir comment les pages sont utilisées, afin d'améliorer le site. Désactivés tant que vous ne les autorisez pas.
Show videos, maps and live data layers from other providers. They receive your IP address and may set their own cookies. Off until you allow it, or load a single item once.Afficher des vidéos, des cartes et des couches de données en direct d'autres fournisseurs. Ceux-ci reçoivent votre adresse IP et peuvent déposer leurs propres témoins. Désactivés tant que vous ne les autorisez pas, ou chargez un seul élément une fois.
Measure campaigns and personalise advertising. We use none today. Off until you allow it, and refused when your browser sends Global Privacy Control.Mesurer les campagnes et personnaliser la publicité. Nous n'en utilisons aucun actuellement. Désactivés tant que vous ne les autorisez pas, et refusés lorsque votre navigateur transmet le signal Global Privacy Control.
Nexus Observatory Inc. keeps a record of each choice as proof: a random consent ID, the time, your region and the rules applied, the choices, the notice shown, the page, a shortened IP address, a one-way code of your browser type and, if you are signed in, your account. Records are kept while your choice applies and for 3 years after, then deleted.Nexus Observatory Inc. conserve un registre de chaque choix à titre de preuve : un identifiant de consentement aléatoire, l'heure, votre région et les règles appliquées, les choix, l'avis affiché, la page, une adresse IP abrégée, un code à sens unique du type de navigateur et, si vous êtes connecté, votre compte. Les registres sont conservés tant que votre choix s'applique et pendant 3 ans par la suite, puis supprimés.
Untick to choose for this site only. You can change either at any time in Privacy choices.Décochez pour choisir pour ce site seulement. Vous pouvez modifier l’un ou l’autre à tout moment dans Vos choix de confidentialité.
/
Positioning, navigation and timing/
ArchitectureOne reference architecture under every deployment: the layers of a site, the protocol functions this platform relies on, and the evidence that travels with every observation.
Plan with usIndustriesAreas · 5 Technologies · 59 Industries · 6
At a glance
In Positioning, navigation and timing, the GNSS positioning and augmentation layer holds multi-constellation, multi-frequency receivers, RTK networks and NTRIP and PPP and PPP-RTK, each drawn against the standard it follows. Receivers using GPS, Galileo, GLONASS, BeiDou and regional systems on several frequencies for accuracy and robustness.
Tatizo
This page shows how Positioning, navigation and timing is put together, layer by layer, from the instrument to the record. 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
Interfaces
Where it works
In the story below
Scenes · 13
Next steps
Plan a deploymentOpen the Field Deployment StudioSee Positioning, navigation and timingPositioning, navigation and timing · Architecture
This page shows how Positioning, navigation and timing is put together, layer by layer, from the instrument to the record. 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.
Architecture · Spectrum, timing and PNT
In Positioning, navigation and timing, the GNSS positioning and augmentation layer holds multi-constellation, multi-frequency receivers, RTK networks and NTRIP and PPP and PPP-RTK, each drawn against the standard it follows. Receivers using GPS, Galileo, GLONASS, BeiDou and regional systems on several frequencies for accuracy and robustness.
Architecture · Spectrum, timing and PNT
In Positioning, navigation and timing, the spectrum regimes and access layer holds exclusive licensed spectrum, tiered shared access and local and light licensing, each drawn against the standard it follows. Auctioned or assigned spectrum licences with defined areas, terms and conditions, used for public mobile networks.
Architecture · Spectrum, timing and PNT
In Positioning, navigation and timing, the spectrum monitoring and interference management layer holds fixed, transportable and mobile monitoring stations, spectrum occupancy measurement and emitter location, each drawn against the standard it follows. Calibrated receivers and antennas that measure what is actually on air around a site or region.
Architecture · Spectrum, timing and PNT
In Positioning, navigation and timing, the resilient PNT layer holds resilient PNT frameworks, terrestrial radionavigation and time over fibre, each drawn against the standard it follows. Structured ways to assess and raise how well equipment resists, detects and recovers from PNT disruption.
Jinsi inavyofanya kazi
In a network for Positioning, navigation and timing, the base node stands between the instrument and the link: it checks each value, stamps its time and place and signs it. The edge refuses any record for Positioning, navigation and timing whose signature fails, and the core keeps every admitted record with its metadata, its quality flag and its licence.
Imani
A network for Positioning, navigation and timing admits a node only once its hardware root of trust has answered an attestation challenge, whoever supplied it. Signed software, keys kept in secure hardware and a signature on every record let anyone check where a value for Positioning, navigation and timing came from.
Architecture · Spectrum, timing and PNT
In Positioning, navigation and timing, the grandmasters, reference clocks and holdover layer holds PRTC and enhanced PRTC, primary reference clocks for frequency and atomic and quartz oscillators, each drawn against the standard it follows. GNSS-traceable time references at 100 ns or 30 ns accuracy that anchor a timing network.
Architecture · Spectrum, timing and PNT
In Positioning, navigation and timing, the interference, jamming and spoofing detection layer holds GNSS interference monitoring, spoofing detection and jammer location to support enforcement, each drawn against the standard it follows. Fixed sensors that detect and characterise GNSS interference near critical sites; detection and reporting only.
Failure and recovery
A failure on a network for Positioning, navigation and timing is caught by the fleet before anyone reports it: the node buffers its data and fails over where it can. The responder for Positioning, navigation and timing gets the evidence with the alert, and the record neither loses data nor counts it twice.
Architecture · Spectrum, timing and PNT
In Positioning, navigation and timing, the packet timing: PTP, SyncE and NTP layer holds Precision Time Protocol, telecom profile with full timing support and telecom profile with partial timing support, each drawn against the standard it follows. The base protocol for distributing time and phase over packet networks.
What you get
What is open for Positioning, navigation and timing is free: the protocol, the methods and the open data can be used and built on by anyone. What must be contracted for Positioning, navigation and timing, sites, fleets, managed operations and data tiers, Nexus Observatory Inc. delivers at a price per site and per fleet, with service levels in numbers.
Next step
Tell us which layers of Positioning, navigation and timing you already run and which you want us to design and deliver. 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 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 presentations01Reference architecture
Every deployment is drawn on the same six layers. A typed contract sits at every boundary, so parts from different makers fit together.
The protocol functions this platform relies on most.
02Trust and evidence
What a buyer, a regulator or a partner grid can check, on every site we build.
Ushahidi
Hardware-rooted identity, with a quote checked at every join.
Ushahidi
Least privilege between nodes, tenants and sites.
Ushahidi
Every clock monitored, every holdover logged.
Ushahidi
What was done, by whom, with what result.
Ushahidi
Each device and release, with the tests behind it.
Ushahidi
Software and configuration change only by a signed plan.
03Read further
04Kwenye tovuti hii
We bring the survey, the design and the crew. The form names who receives your details.
Plan a deploymentWasiliana nasiWe bring the survey, the design and the crew. The form names who receives your details.