topic Re: Field Maps and Flex Mini RTK in ArcGIS Field Maps Questions

Field Maps and Flex Mini RTK

PaulJordan — Mon, 01 Jul 2024 13:07:28 GMT

Hi all,

I'm using a Bad Elf Flex Mini Extreme with RTK corrections from the Massachussetts DOT CORS (MACORS) with Field Maps. When I first open the field map it warns me that the coordinate system of my map (WGS 84) may be incompatible. So I dove under the hood in the Field Maps app to create a new location profile for MACORS. I set GNSS coordinate system to NAD 1983 2011(6318) but I'm stuck where app wants to know the projection and datum transformation.

Thanks!

Paul

Re: Field Maps and Flex Mini RTK

fjramos — Mon, 01 Jul 2024 13:35:21 GMT

The datum transformation we are using is "~WGS_1984_(ITRF08)_To_NAD_1983_2011 + WGS_1984_(ITRF00)_To_NAD_1983" USA - CONUS and Alaska; PRVI + USA - CONUS and Alaska; PRVI. I had to call a trimble rep a while back when setting up the profile for our R2. We recently got some Flex Minis and a Flex Extreme unit. We are using them with this same tranformation and they are working very well on the Flex units.

Re: Field Maps and Flex Mini RTK

PaulJordan — Mon, 01 Jul 2024 13:39:50 GMT

Thank You! I received the following from a user in Mass.

MaCORS (MADOT-maintained) RTK network:

Select the same datum used by the RTK network.

For MaCORS select – GCS NAD 1983 2011 (tip: search for 6318)

Select the coordinate system used by the map:

Select the option – WGS 1984 Web Mercator Auxiliary Sphere (tip: search for 3857)

Be careful not to select 3785.
This will ALWAYS be the map coordinate system!

Zoom into the area where the GPS will be used.

NOTE – zoom into the state of MA. Select Next.

Select the Datum Transformation:

Select the first option – WGS_1984_(ITRF08)_To_NAD_1983-2011
Select Done

Name the Profile… (i.e. Quabbin-RTK)

Re: Field Maps and Flex Mini RTK

JosephGrossman — Mon, 01 Jul 2024 13:41:41 GMT

This EOS article and story map covers the profile setup in field maps pretty well.

Configuring Location Profiles in ArcGIS® Field Maps for iOS® - Eos (eos-gnss.com)

Configuring the Bad Elf Flex for Use With ArcGIS Field Maps

Re: Field Maps and Flex Mini RTK

fjramos — Mon, 01 Jul 2024 13:54:55 GMT

Awesome, we are in a different state, but it seems that transformation is the go to for all of the CONUS. Good to know.