COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
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The graph below shows the theoretical tracking capacity of the 2nd order PLL. The real limit on the Cortex CRT-
DS is slightly lower (typically 15% less).
Figure 24: 2nd Order PLL Tracking capacity
.000
.000
.001
.010
.100
1.000
10.000
10 15 20 25 30 35 40 45 50
Hz/s
C/N0 (dB.Hz)
Max Doppler Rate
100 Hz
30 Hz
10 Hz
3 Hz
1 Hz