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2. If the transmission path from RTK Reference Station and LUBA is fully obstructed by large metal wall
or concrete wall. LUBA could not the the data from RTK Reference station and could not get cm level
accuracy.
Solution:
1) Make sure there is a free transmission path from reference station to the charging station
（
For the
initialization, LUBA need to be set on the charging station and get data from both satellites and
reference station)
2)
If your lawn is with “O”-shape, “U” shape , or with separate lawns,we recommend you to set the RTK
reference station on a higher place, like on the roof. If your law
n is with “L”-shape, you can set the
reference station on the roof or on the point as shown below.
3)
If your Lawn is with “O”-shape, “U” shape , or with separate lawns,we recommend you to also use
the signal extension kit to enlarge your reference station signal cover area.
3 .If there is a high long wall & roof & very dense tree in/around the lawn, the satellite signal of LUBA
can be poor in the covered area. We recommend you to avoid most of the covered area when setting
the map.
Although our integrated navigation system can continue doing the positioning for LUBA, however, the
accuracy of positioning without RTK is not as good as with RTK and can be decrease fast when
satellite signal long time not come back( like LUBA does not get out of the heavy coverage).
Also our App will show the position reliability map when the map is set, we highly recommend you to
adjust your boundary with the “poor” positioning parts, to decrease the “poor” parts less than 10%.
Factor 2: Signal Interference:
The communication transmission power gets weakened with long distance.Please make sure that the
distance between boundary of the map and the reference station is less than 80m.
Signals from the satellite are transmitted to the antenna after being reflected by the glass wall, large
area of water surface(lake/swimming pool) instead of directly from the air. This is called Multi-path
Effect.
Solution:Install the reference station away(at least 5m) from glass wall or lake to get rid of the Multi-
path Effect.
4.2 Find a Good Spot to install RTK Reference Station
As shown above, the RTK Reference Station should be set in a place:
1. At least 5m away from large glass wall & lake/swimming pool;
2.
With open-sky area, meaning there is no any coverage on the top with at least 90 degree zenith
angle( means the distance between RTK reference station should at least be the same as the height
ofthe obstacle itself,as shown below);
