Publicidad
This approach is used when you don't require absolute accuracy. The averaging happens in
stand-alone GPS mode without using any corrections and this provides you with a several
meters absolute accuracy.
The left illustration below (see figure 3) shows the paths of the rover which passes the
marked rectangular contour several times. This rover receives the corrections from the
base configured using averaged single solution. While the position for each individual path
lies within the receiver precision limits, the absolute position may differ by up to a few
meters. We can see this if we repeat averaging of the static base station and build the path
of rover immediately after each reaveraging. Take a look on the right of figure 3.
Figure 3
Perfect for repeatable precise relative positioning (GPS tractor guidance, autonomous
flights and landing): If you only need accurate relative positioning the easiest way is to average
the position using single solution. Just physically mark the point on the ground and save
coordinates to manual in ReachView. Day-to-day result would look almost identical to those
obtained using NTRIP corrections.
Averaged FLOAT and FIX
Averaging RTK FIX solution is much more accurate than SINGLE averaging and is made
possible when the receiver used as the base is configured to obtain NTRIP corrections over
the internet. This might be useful if the reference station is located far away. Reducing the
baseline by installing the local base improves the positioning performance of rover.
On the left of the next illustration (see figure 4) the rover passes the marked rectangular
contour several times. This rover receives the corrections from the base configured using
averaged FIX position.
When the base is set up using averaged FIX solution, the coordinates are determined
with centimeter accuracy (if obtaining survey-grade NTRIP corrections). In this case, the
42
Publicidad
