Global Positioning System Reference
In-Depth Information
Input data in frequency domain after 1-MHz filter
14000
12000
10000
8000
6000
4000
2000
0
0
1000 2000
3000
4000 5000
6000
7000
8000 9000 10000
Number of samples
FIGURE 12.21 Digitally filtered (1-MHz bandwidth) data.
Filter bandwidth versus output with f s = 10 MHz
22
nf
21.5
21
20.5
20
19.5
19
18.5
18 0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.2
2.4
Filter bandwidth in MHz
FIGURE 12.22 Detection S / N versus filter bandwidth with 10-MHz sampling rate.
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