SRC-464

Solar Power Satellite System Definition Study, Phase II Final Report, Volume IV: Technical Analysis Report, D180-25461-4, NASA-CR-160565, 1979

Commissioned by NASA Johnson Space Center, contract NAS9-15636. Who paid for a study is recorded because it bears on how its conclusions should be read, not because it makes them wrong.

Published claims resting on this source

• CLM-0978 In 1979 Boeing wrote down where the timing errors in the transmitter would come from. Most of the allowance, about six of the seven degrees, went to the cables and waveguides carrying the reference around the structure; the electronics at each tube got about one degree each.
• CLM-0979 The three designs disagreed about what the guide signal from the ground should look like. One used a pair of tones either side of the target frequency; one used exactly the transmitter's own frequency and worried about telling the two apart; and by 1979 the reference design had moved to a coded, spread-out signal, the same family of technique that satellite navigation uses.

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