Figure 4-8
4.3 Static Surveying
Static surveying requests at least 2 receivers put on 2 points on a baseline. Keep these
receivers in the same position and track at least 4 satellites then get relative distance of
these 2 points. Static surveying provides the highest accuracy achievable and requires
the longest observation times, from less than an hour to five hours or longer.
The static surveying function in G20M including outdoor surveying and indoor data
post processing.
4.3.1 Baseline network design
(1) Synchronous pattern
As we know, static surveying uses at least two or more than two receivers track same
satellites during same period. And then we can get data of these points. The pattern that
formed by these points called synchronizing pattern. If use three or more than three
receivers, the pattern formed by these points called synchronizing pattern cycle. As
show in Figure 4-9.
Figure 4-9 (synchronous pattern)
(2) Asynchronous pattern
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