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#11
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RapidEye ready for launch
On Aug 29, 1:34*pm, Fred J. McCall wrote:
Jake McGuire wrote: : Commercial imagery, on the other hand, will soon be offering 0.5 meter : images from GeoEye-1. *You can currently buy 100 square miles of 1 : meter imagery from the Ikonos bird for less than $1,000. : :But no matter how much you pay GeoEye, you can't get them to give you :new pictures of a 100 mile square area every day for a week. : True, since the revisit time of a single bird is on the order of 72 hours. *But what do you need that for? You're right. Clearly there is no military advantage to having a picture of what was over the hill this morning as opposed to what was over the hill three days ago. I don't know what I could have possibly been thinking. -jake |
#12
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RapidEye ready for launch
Fred J. McCall wrote:
True, since the revisit time of a single bird is on the order of 72 hours. But what do you need that for? Since the resolution isn't all that good for things directly military a few pseudo-random guesses: *) daily progression of a: - forrest fire - deforrestation - lake filling/draining behind a dam - herd migration (probably won't see individual animals but still see the herd) - locust swarm - storm (do all parts of the earth have good weather satellite coverage?) - largish building being constructed - strip mine rick jones -- oxymoron n, commuter in a gas-guzzling luxury SUV with an American flag these opinions are mine, all mine; HP might not want them anyway... feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... |
#13
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RapidEye ready for launch
Jake McGuire wrote:
:On Aug 29, 1:34*pm, Fred J. McCall wrote: : Jake McGuire wrote: : : Commercial imagery, on the other hand, will soon be offering 0.5 meter : : images from GeoEye-1. *You can currently buy 100 square miles of 1 : : meter imagery from the Ikonos bird for less than $1,000. : : : :But no matter how much you pay GeoEye, you can't get them to give you : :new pictures of a 100 mile square area every day for a week. : : : : True, since the revisit time of a single bird is on the order of 72 : hours. *But what do you need that for? : :You're right. Clearly there is no military advantage to having a icture of what was over the hill this morning as opposed to what was ver the hill three days ago. I don't know what I could have possibly :been thinking. : Which brings us back to resolution. A tank is a single pixel in imagery with that resolution. You can't bloody tell what is over the hill that's different because the resolution is too poor for militarily significant objects to show up. Yeah, I don't know what you were thinking, either. -- "Ignorance is preferable to error, and he is less remote from the truth who believes nothing than he who believes what is wrong." -- Thomas Jefferson |
#14
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RapidEye ready for launch
Rick Jones wrote:
:Fred J. McCall wrote: : True, since the revisit time of a single bird is on the order of 72 : hours. But what do you need that for? : :Since the resolution isn't all that good for things directly military :a few pseudo-random guesses: : :*) daily progression of a: : - forrest fire : - deforrestation : - lake filling/draining behind a dam : - herd migration (probably won't see individual animals but still : see the herd) : - locust swarm : - storm (do all parts of the earth have good weather satellite : coverage?) : - largish building being constructed : - strip mine : All those are good thoughts. None of them are military applications (which is what was being discussed). -- "Rule Number One for Slayers - Don't die." -- Buffy, the Vampire Slayer |
#15
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RapidEye ready for launch
Jake McGuire wrote: Less than one cubic meter, according to RapidEye. Does that solar array on the side deploy once on-orbit? Pat |
#16
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RapidEye ready for launch
Fred J. McCall wrote:
Rick Jones wrote: :Since the resolution isn't all that good for things directly military :a few pseudo-random guesses: : :*) daily progression of a: : - forrest fire : - deforrestation : - lake filling/draining behind a dam : - herd migration (probably won't see individual animals but still : see the herd) : - locust swarm : - storm (do all parts of the earth have good weather satellite : coverage?) : - largish building being constructed : - strip mine : All those are good thoughts. None of them are military applications (which is what was being discussed). If you can see the herd of animal can you also see the "herd" of military vehciles - although not know what they are specifically? The largish building being constructed could be anything from a new sports center to a new centrifuge plant? Increase in tailings piles from a mine could be increase in spoil (?) from an underground complex being dug. A road being built in the middle of nowhere. Trenching or pylons for high voltage power lines running to nowhere. Probably none of them would be very good for detecting nefarious tactical porpoises, but they might be "OK" from a more strategic view? It is probably rather more "spoofable" than other things up there. Still, suitability may be relative to someone's current imaging abilities? rick jones -- oxymoron n, Hummer H2 with California Save Our Coasts and Oceans plates these opinions are mine, all mine; HP might not want them anyway... feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... |
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