Global Positioning System Reference
In-Depth Information
30
20
10
0
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10
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30
20
0
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Run time (minutes)
Figure 8.16
(Top line) Carrier-phase and (bottom line) smoothed-code DDs.
1
0.5
0
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0.5
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1
20
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15
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10
Run time (minutes)
Figure 8.17
Carrier-phase minus smoothed-code DDs.
8.4.1.5 Initial Baseline Determination (Floating Solution)
The smoothed-code DD from the complementary Kalman filter, once the filter is
initialized, is key to determining the floating solution. The floating baseline solution
is a least squares fit yielding an estimate of the baseline vector
b
, accurate to within a
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