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Appendix
A-1 More Usage Scenarios
A-1-1 Base-Rover RTK with PPP-Corrected Base
Figure A-1
In places without RTK base correction service but with cellular phone network, one can do RTK
surveying by setting up a mobile RTK base with initial approximate base position coordinates, later
upload base measurement data to online PPP service to get accurate base position coordinates, then
later correct rover collected data set by the offset determined from initial approximate base position
and PPP derived accurate base position.
A pair of S100 RTK receivers is needed to perform this operation as shown in Figure A-1.
See section A-2-1 and A-2-3 on setting up mobile Bluetooth RTK base.
See this blog on working with online PPP service.
The procedure steps to do this:
1. Setup mobile RTK base to log data for later uploading to online PPP service to derive accurate
base position. See Figure A-2 a.
2. Setup mobile RTK base to work with RTK rover, with base having approximate position P
0
. P
0
can
be 1 minute automatic surveyed approximate position. See Figure A-2 b.
3. Perform RTK surveying
4. After RTK surveying is completed, continue data logging if data logging time duration is still
insufficient.
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