Group Resources

Group Leadership

.Chair and SEC Reresentative
Ray Kerwin
Topcon Positioning Systems, Inc

Vice Chair

Andrew Hurley

AEM Staff Contact

Mike Lietke
Sr. Director, Statistics & Market Information | 414-298-4133

Rex Sprietsma
Director, Statistics & Market Information | 414-298-4147


To work in the best interests of this rapidly developing industry and its technology.

Product Focus

  • Laser units (theodolites and other equipment)
  • GPS equipment, as relates to mapping, machine guidance & control (as in ag planters, fertilizer application, road milling, paving, compaction machines, etc).
  • Aerial and space based mapping, photogrammetry, and vegetation identification equipment and processes.
  • Ground penetrating radar for utility location, pavement, base layer, and soil layer mapping and measuring, hydrography, and so on.

Potential GIG Activities

  • Developing consensus standard terms, definitions and specifications for technologies, products and their use, for use in marketing, user manuals, etc.
  • Monitor, contribute to and/or respond to standards organizations work touching GIG products and use (ISO, ANSI, etc).
  • Develop a working relationship with National Geodetic Survey (NGS) and address industry issues.
  • Promote the value and use of the products.
  • Develop guidelines for save use and data collection.
  • Develop a market statistics program within AEM’s statistics function to measure market size, by several geographic regions and for several product types.
  • Address other issues as the group may decide is needed.