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Preliminary Ka-Band configs #44

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2 changes: 2 additions & 0 deletions Documentation/Kirk's Notes.txt
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Expand Up @@ -30,6 +30,7 @@ Satellite telecom Frequency assignments
// Westar 1: Uplink at 5925-6425 MHz, downlink at 3700-4200 MHz
// Comstar 1: Uplink at 5925-6425 MHz, downlink at 3700-4200 MHz, two polarized beams
// Marisat: Uplink at 300-312 & 1638-1642 & 6420-6424 MHz, downlink at 248-260 & 1537-1541 & 4195-4199 MHz [12]
// CS-2: Uplink at 6???-6??? & 27625-28945 MHz, downlink at 4???-4??? & 17825-19145 MHz [35]
// XM Radio: Uplink at 7050-7072 MHz, downlink at 2320-2332 MHz [20]

Satellite TT&C frequency assignments
Expand Down Expand Up @@ -76,6 +77,7 @@ However, it gives a good idea of what the state of the art was for ground statio
// 1976 - Comstar 1: FM? [4, p.20-16]
// 1976 - Marisat: FM or CPSK [12, p.257]
// 1983 - Soviet general: Deployment of MDVU-40 equipment [30, p.3-50], a.k.a TDMA-40(?), implied to use QPSK encoding [5, p.IV-7]
// 1983 - CS-2 (Sakura): CS-2 offers QPSK and TDMA-65 in Ka-band [35]
// 1985 - Intelsat V: Intelsat V supports TDMA-120, implied to use QPSK [5, p.IV-7]
// 1986 - Intersputnik general: Intersputnik stations still use FM for TV, but digital TDMA-40 mode for voice is rolled out [5, p.A-3]
// 1989 - Intelsat VI: TDMA-140 or TDMA-155 employed, using 8PSK [5, p.IV-7]
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6 changes: 5 additions & 1 deletion Documentation/citations.txt
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Expand Up @@ -64,4 +64,8 @@ List of sources and citations used for Skopos, in no particular order
[32] Satellite Communications, 2018
https://itso.int/wp-content/uploads/2018/04/Presentation-by-Intelsat.pdf
[33] Syncom Engineering report Volume II, 1967
https://ntrs.nasa.gov/api/citations/19670015715/downloads/19670015715.pdf
https://ntrs.nasa.gov/api/citations/19670015715/downloads/19670015715.pdf
[34] Overview of Ka-band Satellite System Developments, 2012
https://www.itu.int/dms_pub/itu-r/md/12/iturka.band/c/R12-ITURKA.BAND-C-0008!!PDF-E.pdf
[35] Pilot Program and Operational Users of CS-2, 1987
https://doi.org/10.1016/0094-5765(87)90112-3
13 changes: 13 additions & 0 deletions GameData/Skopos/telecom.cfg
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Expand Up @@ -36,6 +36,19 @@
//make it 1024 so rate halvings divide evenly
ChannelWidth = 1.024e9
}

BandInfo {
name = Ka (Wideband)
TechLevel = 7
// Put the allocation just below 18 GHz.
Frequency = 18.95e9
// ITU allocates FSS downlink between 17.7 and 20.2 GHz, and uplink between 27.5 and 30 GHz [34, p.4]
//(actually 17.7-21.2 and 27.5-31, but upper 1 GHz is government/military reserved in most regions)

//Standard ITU Ka-band fixed satellite service allocations. 2500 MHz uplink, 2500 MHz downlink. [34, p.4]
//make it 4096 so rate halvings divide evenly
ChannelWidth = 4.096e9
}
}

@RealAntennasCommNetParams:AFTER[RealAntennas] {
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