COMMAND RANGING & TELEMETRY UNIT CORTEX
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Page 42
3.3.2.2.
IF Receiver in Video Mode
Next table gives the acquisition and tracking C/No and Doppler rate thresholds according to the PLL bandwidth:
PLL bandwidth (Hz)
Worst Case C/No (dB.Hz)
Worst Case Doppler rate (Hz/s)
1
10
3
15
10
20
<1
30
25
5
100
30
50
300
35
400
1000
40
4000
3000
45
40000
3.3.2.2.1. PM and Coherent AM Demodulation
Operating Mode
Carrier Acquisition Mode
Normal
High Index
Automatic
Highest spectrum line
Center spectrum line
Manual
Manual sweep
3.3.2.2.2. FM Demodulation
Operating Mode
Carrier Acquisition Mode
Automatic
Barycenter frequency
Manual
Acquisition by-pass
3.3.2.2.3. By-pass, Spectrum and Non Coherent AM Modes
The acquisition process is by-passed in these modes (by-passed IFR, Spectrum analysis and non-coherent AM).
