REAL-TIME GEOID HEIGHT FOR ARROW (ORTHOMETRIC HEIGHT SUPPORT)
Collect Survey-Grade Vertical Data with Any Software Using Arrow
Users of the Arrow Series GNSS receivers can take advantage of high-accuracy (i.e., survey-grade), real-time orthometric height data-collection in the field. The Arrow receiver will output accurate GNSS elevations into any data-collection app. Eos also offers a detailed how-to guide, free Python script (for Collector for ArcGIS) and metadata fields PDF (also for Collector) to help customers get started with real-time geoid height conversion.
Who is this solution for?
The Arrow receivers now support the entire United States to provide survey-grade elevation in NAVD88 orthometric heights through the GEOID12B (US) geoid model. The Arrow receivers also support the Canadian CGG2013a and HTv2.0 geoid models for the CGVD2013 and CGVD28 vertical datums, respectively. Additional geoid models for other countries are planned in the future.
In addition, the solution is available for iOS and Android data-collection apps. Eos will add support for Windows devices shortly. Please check back for updates, or subscribe to the monthly Eos newsletter to be alerted when this solution is available on Windows.
KEY SOLUTION FEATURES
Real-time Geoid Height eliminates time-consuming post processing
Turns any smartphone or tablet into a 3D, survey-grade data collection device
Available for the US and Canada (more locations being added)
Field crews stay more productive with high-accuracy Z coordinates
Compatible with any data collection app on iOS or Android
Metadata Fields PDF
Eos has put together this PDF table to shows you all the possible metadata fields you might want to add to support geoid heights in your mobile app. The list is exhaustive and includes fields you might want to uses for laser mapping offsets. Follow the legend to determine which fields to add to your app.
EOS TOOLS PRO
Eos Tools Pro is a free monitoring and utility app for Arrow Series™ GNSS receivers®. The app works in conjunction with the data-collection app of your choice, to provide advanced GNSS information — such as RMS values, PDOP, Differential Status, Satellites Tracked and Used, and more. Such metadata is critical for submeter and centimeter GIS and surveying data collection.
Elevation for Beginners: What to Know About GPS Receiver Elevation
What is the difference between the ellipsoid, mean sea level, geoid, geoid height, and orthometric height — and which one is right?
All elevation measurements are, in essence, the difference between the earth’s surface and a point above or below it. But because the earth’s surface is full of physical anomalies and is changing constantly, scientists rely on theoretical representations — called “vertical datums” — to represent the earth’s surface.
Here’s how to make sense of the Z coordinate in your fieldwork.
How to Configure ArcGIS for Orthometric Height with Arrow
In this article, Eos shows you which GNSS metadata fields to add as attributes to ArcGIS Online in order to collect real-time geoid heights. We’ll also show you how to designate Eos Tools Pro as the app that will be performing orthometric-height measurements inside Collector for ArcGIS®. This article includes optional Laser Mapping instructions.
How to Collect Geoid Height with Arrow and Esri’s Collector for ArcGIS
Arrow GNSS receivers now support real-time geoid height (orthometric height) data collection on iOS and Android. In this video, you’ll learn how to collect geoid height with Arrow in Esri’s Collector for ArcGIS. To follow along you’ll need an Arrow receiver and the latest versions of Collector and Eos Tools Pro.