Giant Chinese Desert Mystery Structure Solved 161
Velcroman1 writes "Slashdotters read Monday about strange symbols in the Gobi Desert recently imaged and indexed by Google Maps. Alien landing zones? Some military thingy? Bizarre art project? Nope. The grids of zigzagging white lines seen in two of the images — the strangest of the various desert structures — are spy satellite calibration targets, according to one NASA scientist."
Re:spy satellite calibration targets (Score:5, Informative)
Re:spy satellite calibration targets (Score:5, Informative)
No, they don't match any other places. They're just for calibration. US has similar ones in Arizona.
And Texas [g.co]. (Although that one was a NASA photogrammetry calibration target, I think..)
Re:Why Needed? (Score:5, Informative)
Well, from reading the article, I gather that it's because they might have needed something bigger because the resolution on their spy satellites is not that good. FTFA: "The calibration targets are larger than might have been expected, he said, suggesting that the satellite cameras they are being used to calibrate have surprisingly poor ground resolution."
Re:Bombs.. (Score:5, Informative)
Yes, they drop bombs there.
Its a bombing range. Used to practice bomb drops by the Chinese military.
Re:spy satellite calibration targets (Score:5, Informative)
Luecke is used for calibration, but it was not originally intended for that.
IIRC it was done due to a land dispute with the state.
Re:Why Needed? (Score:4, Informative)
Calibration is one thing, and actually seeing shit is something else. Maybe they just wanted to make calibration easy with a big easy target to calibrate against.
Re:spy satellite calibration targets (Score:5, Informative)
So... they correspond to something on the ground they want to match, I betcha.
I betcha not. I betcha they send the satellite up with an image of what to look for on the ground and where to find it, the satellite heads above it, and then orients itself until the view on the ground matches the image. The purpose is for the satellite to calibrate its own position and orientation in space. Once that's done then they can just tell the damn thing where to go to look at whatever the hell they want to look at.
It's the queers. (Score:2, Informative)
They're in it with the aliens. They're building landing strips for gay martians. I swear to God.
Re:Happy Holidays from the Golden Girls! (Score:1, Informative)
Re:spy satellite calibration targets (Score:4, Informative)