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NTRIP Networks · Real-Time GNSS · Emlid Flow
NTRIP Sign Up, Mount Points, and Configuration
Network Directory Access Our Full NTRIP/RTK Network Access Guide by State →
This video guide demonstrates the registration process for the two most common web infrastructure platforms powering publicly accessible, state-maintained networks: Pivot Network and Spider Business Center. Furthermore, we unpack the structural differences between common types of RTK stream mount points (including Virtual Reference Stations) and detail how to save an active NTRIP Network profile inside your field account for simplified deployment.
By implementing these parameter steps, you can utilize an Emlid Reach RS3, Reach RS2+, or compact Reach RX rover to receive precise real-time kinematic corrections natively via cellular NTRIP streams or over a bridged Bluetooth internet connection.
1. Pivot Network Sign Up Workflow
NTRIP networks across different government jurisdictions typically run on varying back-end management portals. A prominent framework is the Pivot Network layout—utilized, for example, by the Ohio Department of Transportation (ODOT) to manage their regional correction streams. Submitting an application for this style of RTK network is highly straightforward: simply complete their digital portal creation form, and their automated server system will email your unique NTRIP access credentials following internal system approval.
2. Spider Business Center (SpiderNet) Portals
In a contrasting technical approach, states such as New York manage their reference arrays via a SpiderNet network framework. The validation engine requires a dual-step security setup: first, you create primary registration credentials to manage the external web portal dashboard; next, you generate a completely distinct username and security password block explicitly dedicated to your data corrections stream.
This secondary NTRIP credential set is what you will directly input into your receiver profile inside Emlid Flow. Once your master registration is verified via email, log into the state portal, navigate to the system Shop section, and check out to subscribe to the active Real-Time Network (RTN) stream. While many state-maintained reference systems are provided as a free public service, some regions mandate access fees for ongoing data authorization. If your annual service access window has lapsed, simply enter your Account Details tab dashboard and click Renew Subscriptions. You can also edit your streaming security credentials or cross-check mount point array compatibility via the RTN Ports/Mount Points directory.
3. Structural Breakdown of Stream Mount Points
Modern multi-frequency GNSS receivers require streaming data packets formatted strictly to RTCM3 baseline standards. Not all mount point configurations handle corrections in the same manner, and specific RTN clusters may restrict access to particular calculation types. Review the core structures below to choose the optimal stream for your field layout:
Single Baseline
Typically identified inside directories by naming conventions containing "near" or "msm". The caster engine dynamically isolates the closest active physical CORS base station relative to your rover's current coordinates, routing differential data straight from that specific terminal across the web to your receiver stick.
Virtual Reference Station (VRS)
This dynamic calculation method processes live tracking indicators from a cluster of local physical CORS base installations surrounding your site. The network server utilizes this data to model atmospheric constraints and simulate a customized "virtual" reference base stationed right on your active parcel grid.
Individualized iMAX
Under the Individualized Master Auxiliary Corrections routine, the server maps the absolute closest baseline CORS unit as your master hub. It feeds raw data from this hub along with supplementary tracking vectors from auxiliary baseline tracking stations into a centralized engine to compute refined correction paths customized to your master hub coordinate.
Master Auxiliary (MAX)
Built upon the same network topology as iMAX, using a designated master baseline hub station. However, rather than executing the tracking computation on a remote cloud server, the network broadcasts the complete multi-station raw coordinate array straight to your rover, instructing the field hardware receiver to compute corrections internally.
4. Creating a Permanent Profile in Emlid Flow
Once your network authorization account goes live and your NTRIP credentials are validated, you can store those parameters as a permanent profile inside Emlid Flow to eliminate manual field inputs on future jobsites:
- Launch Emlid Flow and input your server IP, assigned port index, custom username, and verified stream password.
- Query the casting server to load the mount point directory list and select the correction type that aligns with your site constraints.
- Save the asset profile with a descriptive label for easy selection during subsequent project initializations.
💡 Receiver Capabilities Note: Because NTRIP stream profiles vary significantly by geographic boundaries, you can cross-check our complete nationwide tracking index via our NTRIP/RTK state instructions directory. Compact network smart antennas like the Reach RX safely absorb real-time kinematic data corrections over a bridged Bluetooth cellular data connection, while larger multi-band receivers like the Reach RS2+ and RS3 leverage integrated internal SIM card modems and local cellular hotspots to connect to the cloud directly.
For a deeper, math-heavy exploration comparing the geodetic performance and localized residual variances of VRS vs. MAC network solutions, review the comprehensive 2009 research paper published by Volker Janssen. For operators executing multi-state tracking loops where state networks are unavailable, a seamless nationwide commercial correction alternative is available via the Point One Polaris RTK Network subscription service.