34
16.
When surveying a group of locations within walking distance, can leave Alpha powered up,
taking the range pole or tripod to next location to survey. Switch to the Lefebure NTRIP
Client App to check if Alpha is in RTK Fix state before recording the next location position
with Data Collector App. The setup procedure only needs to be performed once. Later use
only need to run Lefebure NTRIP Client and connect.
6-4-3
GIS Survey Configuration Using Locally Setup Base/PC and Phone Connection
Base
USB mode / switch on A
Micro-USB
cable
Internet
Bluetooth
Rover
BT mode / switch on B
NTRIP
caster
NTRIP
client
3G/4G/LTE
Setup for GIS Data Collection
RTK
antenna
RTK
antenna
. . .
Alpha RTK
Alpha RTK
Figure 6-15
Use section 6-2 method to configure one Alpha receiver into RTK rover. Depending on what’s available
to determine base antenna position, select one of the options to configure the second Alpha RTK
receiver into RTK base as described in section 6-3.
Once Alpha RTK base and rover settings are properly configured and able to get rover RTK Fix with
short baseline experiment as described in section 6-4-1, one can proceed to setup base to send data
over Internet.
If having fixed IP to setup a local base, one can use RTKLIB’s STRSVR to setup NTRIP Server/Caster RTK
base station to work with remote NTRIP Client. Please refer to Appendix A-3 for setup procedures.