Eos Positioning Systems May 2025 Newsletter - Spicer Group Provides High-Accuracy GNSS and GIS Services to the City of St. Louis, Michigan, with Eos Arrow and ArcGIS Apps

May 2025 Newsletter: St. Louis GIS Gets Accuracy “Spiced” Up

Feature Story

Spicer Group Providing Professional Geographic Information Services to the City of St. Louis, Michigan, for Over a Decade now using Eos Arrow GNSS and ArcGIS

Spicer Group Helps St. Louis, Michigan, Modernize Asset Management

Spicer Group helped the City of St. Louis, Michigan, modernize its infrastructure mapping by integrating high-accuracy GNSS technology and ArcGIS Field Maps. Using the Arrow Gold® GNSS receiver with the MDOT CORS network, they achieved 1 cm positional accuracy. This upgrade supported the city’s shift from outdated paper maps to a reliable, cloud-based GIS system. The effort, funded by SAW and DWAM state grants, improved utility data accuracy, regulatory compliance, and emergency preparedness, while enabling efficient asset management and ongoing infrastructure improvements.

See How they Spiced Up City Maps >

Industry News

First All-Canadian Antarctic Expedition Draws Underwater Maps with High Accuracy Using Canadian-Made GNSS Technology

First All-Canadian Antarctic Expedition Draws Underwater Maps with High-Accuracy Using Canadian-Made Arrow GNSS Receiver Technology From Eos Positioning Systems

In a landmark moment for Canadian science and technology, the first all-Canadian Antarctic research expedition used an Eos Arrow Gold+ GNSS receiver and Galileo High Accuracy Service for precise location data in one of the most remote and unmapped environments on Earth.

Discover how they explored — and drew — the depths of the Antarctic in 3D >

Evansville Water and Sewer Utility Improves As-Built Time with Eos GNSS & the ArcGIS Utility Network

Click the video to launch YouTube, or read the ArcUser article.

Skadi Series

[New Video] How to Map a Point with the Skadi Smart Handle™: Using the Invisible Range Pole™ and ArcGIS® Field Maps

This video guides you through the setup and workflow for collecting a point using the Invisible Range Pole, a mode of the Skadi Smart Handle, with ArcGIS Field Maps.

Click the video to launch YouTube, or read the step-by-step guide here.

Product & Technical Updates

Dive Deep into Understanding GNSS Metadata in Eos Tools Pro with Two New Resources:

GNSS Coordinates versus compensated coordinates in Eos Tools Pro app with Skadi Smart Handle

Understanding “GNSS” vs. “Compensated” Coordinate Values When Using the Skadi Smart Handle™

The “Position” page of Eos Tools Pro helps you monitor important metadata when using the Skadi Smart Handle. In this article, we explain how — and why — to interpret the “GNSS” versus “Compensated” coordinate values when using the smart handle.

How to Read “GNSS” vs. “Compensated” Coordinates >

Screenshot of Eos Tools Pro TX and RX values - how to interpret them

What are the TX and RX indicators in the Eos Tools Pro app?

In the top right corner of the Eos Tools Pro app, you will see two circular light indicators labeled “TX” and “RX.” These indicators provide information about whether you are sending and receiving corrections. In this new FAQ, learn how to interpret the TX and RX indicators in Eos Tools Pro.

How to Interpret TX and RX Indicator Lights in Eos Tools Pro >

Current GNSS Satellite Status

Current GNSS Satellite Status for May 23, 2025:

2025 May 23 GNSS constellation status update Eos Positioning Systems - current satellites in GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS

Customer Spotlight

Eos Positioning Systems Customer Spotlight: Tanner Arrington Combats Invasive Species with Highly Accurate Machine Learning Models

Tanner Arrington Combats Invasive Species with Highly Accurate Machine Learning Models

For Tanner Arrington, nature is more than just a backdrop to his work — it’s the purpose behind it. As an independent GIS Consultant and former GIS Manager at the South Carolina Department of Natural Resources (SCDNR), Tanner used Arrow 100 and Arrow Gold GNSS receivers with Esri’s ArcGIS apps to deliver reliable, high-accuracy data across a wide range of projects, including mapping trails, georeferencing drone imagery, and tracking the spread of invasive species. His goal is to use high-confidence data to represent — and care for — the world we live in.

Get to Know Tanner >

Upcoming Events

2025 MISA Ontario Annual Conference & Trade Show in Windsor, Canada with Eos Positioning Systems

2025 MISA Ontario
June 2-3 | Windsor, ON, CAN

Eos is proud to support the MISA Ontario community at the annual conference this summer. Check out the latest Eos GNSS equipment and solutions, including both the Skadi Series and Arrow Series GNSS receivers, in booth #21. Our local staff will be available and happy to answer any mapping questions.

Find Eos in Ontario >

American Water Works Association Annual Conference and Exhibition 2025 AWWA ACE 25 in Denver, Colorado at the Colorado Convention Center with Eos Positioning Systems

AWWA ACE25
June 9-11 | Denver, CO, USA

Eos is proud to return to the Esri booth for AWWA ACE25 in Denver. Members of our technical and sales team will be available to answer any questions you have about getting started with or expanding your use of high-accuracy digital maps. Find us in Esri booth #1344.

Find Eos in Denver >