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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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