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matt knox's avatar

math error, I think

" At around $500 per square kilometer (apologies for the mixed units, but we’re going with industry standards), a single US collection would be $5 billion." That's about right, in that the US is about 10M km^2. But then, "current retail pricing of around $50/sq. km, it would only cost you $150 million to cover the US, or $7.7 billion to cover the whole Earth. ". But if it'S 10x cheaper, it should cost $500M to cover the US. You seem to have the right multiple of US/earth surface area (earth:US :: 51:1), so the cost for the earth should be ~$25B.

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Mark hewis's avatar

Fascinating article. Only thought is why does the Array multi static SAR ring need to be dedicated ? Ie if know position of satellites in LEO then why not add capability,to say, thousands of starlink sats. I am guessing the ring shape and close Comms between sats in ring critical.

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