Comparing ublox GNSS module accuracy

posted

Goals:

ublox f9 hps 1.4.0 interface description

What I have to test with

instock PD5140 dc block splitter

antennas

modules

The modules under test are going to be

actual devices:

Monuments that are nearby

stability A no pictures:

Stability B with picutres:

Tests

monument from NGS

static test, with a single antenna on a tripod going to a splitter with all the modules

test both antennas sparkfun and ublox sequentially

outputs

results

starr jc park rails

moving test, with a single antenna mounted to a train going to a splitter to all the modules

test both antennas sparkfun and ublox sequentially

I kinda also want to try an M8P with netowrk ntrip vs M8P with local ntrip over 915MHz from a base station that was allowed to settle that would only be ublox antennas though

outputs

results

Test Setup

wheel ticks

TODO: need direction and wheel tick lines from train

Status Lights to make testing possible

maybe accuracy lights for each board like sparkfun has on their kit, 10m, 5m, 1m, 10cm, 1cm?

data flow

ublox -> mcu for status lights ublox -> computer for data logging