TURN GPS Stations

What Is a Reference Network?

A GPS network is a high-precision global navigation satellite system (GNSS) providing real-time corrections and data for post processing. A GNSS network consists of permanently located GPS receivers, installed across the state, that generate real-time, high-accuracy GPS positioning. Basically, all of the permanently installed GPS receivers send their data to a system that analyzes the input and adjusts and corrects the data to provide the most accurate locations.

About this Network

The coordinate reference frame for this network is NAD83(2011)(EPOCH:2010.0000.). The latitude, longitude, and ellipsoidal height of each reference station were calculated by processing 24 hour files using the National Geodetic Survey (NGS) Online Positioning User Service (OPUS) Projects application.

Eighteen NGS Continually Operating Reference Stations (CORS) were selected along the perimeter and interior of the network and were constrained to the published coordinates to conduct the final adjustment of the network coordinates.

With an activated subscription, set your GPS unit's VRS connection address to 168.179.231.9 and port 2101. Enter your new device-specific username and password.

Connections from Source Table

For Trimble units we have three different connections.

  • VRS_CMR works with older Trimble units.
  • VRS_CMRp works with Trimble units that are newer but may not have the latest updates to the firmware.
  • VRS_CMRx works with the newest Trimble units.

All of these give you the network solution.

For non-Trimble units we have two different connections.

  • VRS_RTCM23 works with older non-Trimble units.
  • VRS_RTCM31 works with non-Trimble units.

Both of these give you the network solution.

MS_CMR and MS_CMRP are for connecting to a single base when you are on the edge of a network or are not getting a strong network solution. In these cases, the system will automatically find the closest station and connect you.

Getting Started

Create an Account

Visit The Utah Reference Network GPS Payment and select New Registration, then follow the instructions. You'll need a credit card, $600 for a subscription, and the following information...

  • Organization (avoid punctuation)
  • Login
  • Password (8 characters)
  • Contact Name, email, phone number
  • Physical location/address
  • Mailing address

Renew an Account

Visit The Utah Reference Network GPS Payment and select Renew Subscription. You'll need a credit card, $600 for a subscription renewal, and the following information...

  • Organization (avoid punctuation)
  • Login
  • Password (8 characters)

When done you will receive a confirmation email and receipt. If the account has expired, it will take about 24 hours for the subscription payment to cycle through and the activation to be complete for field work, otherwise you will not notice any interruption.

Support Contacts

Comments, questions, compliments, or concerns can be directed to Mike Heagin from AGRC at MHeagin@utah.gov or 801-537-9296, or Sean Fernandez from AGRC at SFernandez@utah.gov or 801-209-9359

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