Join Date: Jun 2019
Location: Northern Illinois, USA
Mentioned: 0 Post(s)
Quoted: 5 Post(s)
Well the ArduSimple boards don't contain micro-controllers, so the relative antenna positions is pulled from a NED vector (North, East, Down from UBX-NAV-RELPOSNED). The math involved is high school level geometry, early teens stuff in my rough recollection of UK schools, probably late teens in USA.
I know people who've spent a lot of money on electronic compass solutions, and been very highly dissatisfied. The simple dual antenna arrangement is quite effective, especially if one can decide on a left-right, front-back orientation for the vehicle, based on the angle you've got critical interest in. Precision comes from the separation you can achieve between the antennas.
Not sure I'd build a 3-antenna system with ZED's, I'd probably opt for an L1 NEO-M8P solution for the secondary and tertiary antennas, would likely be fine on a tractor with a large open field. It doesn't even need a full RTK fixed/float solution to get a good vector model.
I do have a 3-shield motherboard on it's way.
NFA Crew - Viking-Sorcery
Team uBlox - Team STM32