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8 RTK Mapping<br />

B Tip<br />

Using a ground plane<br />

Ground planes are usually only used at the base receiver. They reduce<br />

the incidence of multipath. If you use a ground plane, select the option<br />

with ground plane as the antenna type, for example ‘Compact L1/L2<br />

w/GP’. To measure the uncorrected height of the antenna with a<br />

ground plane, measure to the underside of the notch in the ground<br />

plane, as shown in Figure 8.5.<br />

Measure<br />

to this<br />

point<br />

Figure 8.5 Measuring the height of a Compact L1/L2 Antenna with ground<br />

plane<br />

– Measure the height to three notches around the perimeter of the<br />

ground plane and record the average as the uncorrected antenna height.<br />

This will take into account any errors due to a tripod that has not been<br />

accurately leveled.<br />

206 TSC1 Asset Surveyor Operation Manual

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