2018-07-18 08:55:12


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Chinese Lunar Orbiter Chang'e-2

Page: Sats.Change2 - Last Modified : Sun, 19 Jun 11
S-band downlink parameters
  
Frequency:2210.8 MHz
Modulation:PM
  
Downlink modulation:+/-65536Hz sidebands
 1024Bd BPSK
Coding:Viterbi 1/2
Frame:1024bits (after Viterbi)
Syncword:44 44 24 C4 50 hex
  
Uplink echo on downlink:+/-8040Hz sidebands
 125Bd BPSK
  
More info will be added soon...
S-band downlink spectrum screenshots (using 10m dish):
 

Basic TLM, SC not being commanded
 

SC sweeps and locks to groundstation
 

Start of commanding, uplink echo subcarrier appears
 

Middle of pass, SC locked to GS, showing all subcarriers
 

End of visibility from GS, SC unlocks
 

SC doppler and signal level with compensated Moon doppler
 

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