French Threat To ID Secret US Satellites
SkiifGeek brings to our attention a story that ran on space.com a few months back but didn't get much wider notice at the time. "The French have identified numerous objects in orbit that do not appear in the ephemeris data reported by the US Space Surveillance Network. Now, the US claims that if it doesn't appear in the ephemeris data, then it doesn't exist. The French insist that at least some of the objects they have found boast solar arrays. Therefore it seems that the French have found secret US satellites. While they don't plan to release the information publicly, they do intend to use it as leverage to get the US to suppress reporting of sensitive French satellites in their published ephemeris."
The US has had the Ground Based-Electro-Optical Deep Space Surveillance system since the early 1980s. GEODSS is an automated sky search telescope system. Multiple sites with multiple 40-inch telescopes search the sky automatically every night, looking for anything that isn't in the catalogues. GEODSS will even detect dark objects that occult stars. Everybody has automated astronomy now, but it started with GEODSS, around 1980.
GEODSS has an unusual feature for a telescope - illumination. The system can use one of the telescopes at a site to aim a laser light source, while the other telescope looks at the target with the imager. This allows a good look at low-orbit satellites.
The original test installation for GEODSS, at White Sands, NM, is now used by MIT to look for near-Earth objects. They've found 1622 so far. It wouldn't hurt to have more systems working on that problem. A French version of GEODSS would be a win for everyone.
If I recall correctly, the US didn't know where or when Pakistan (or was it India?) was about to detonate its first test nuke because the satellites didn't see the materials being moved in or out of the expected sites. They didn't see it because the Pakistanis (or Indians) were keeping track of satellites and not moving anything when there were unknown ones overhead. It's quite easy to do; it just requires a lot of manpower (which there is plenty of in the subcontinent)
vik
"I think it would be a good idea" Gandhi, on Western Civilisation
There's a number of useful things you can know about a satellite, just knowing it's orbit.
* If it's geostationary, it's designed to look at or communicate with whatever is right underneath it. It's also unlikely to be a photorecon satellite, because your km-per-pixel sucks from 36,000 km away.
* If it's in a polar orbit, it's probably designed to look at big swathes of the Earth as the latter rotates under it. Polar orbits are too expensive otherwise.
* If it's in a low orbit with just enough inclination to get up to your latitude -- why, that sounds like it might be a photorecon satellite designed with you in mind...
* In which case, if you know when it's over you, and when it's not, then you have a rough idea of when you're in the crosshairs. That can be handy.
I don't necessarily disagree that the main way you keep your capabilities secret is to keep what the satellites do secret. But it probably helps, at least a little bit, to keep the existence and orbit of the thing secret, too.
Amateur satellite trackers have been the bane of US secret satellite projects for quite a while, actually. You don't necessarily even need a telescope to do it, you just need to live somewhere without too much light pollution. (Which is probably why a lot of the notable amateurs tend to be from Canada or Australia.) Of course what the amateurs publish probably doesn't come close to the precise ephemeris data that the French are gathering, and likewise doesn't include radio frequencies.
http://www.onera.fr/photos/instexp/graves.php
http://www.onera.fr/dprs/graves/index.php
It also appears that a big, big part of the systems is invisible: a real time calculator, the size of which is unknown. But it may guzzle some Watts in my opinion....
As for the political aspects of the affair, well... It is certainly very unelegant from the US space authorities to publicize European spy satellites trajectories, and we cannot get accustomed to the sheer amount of unelegance that has flown eastward to Britanny since 2003.
Next, I doubt amateurs could do what Graves does, especially since trajectories can change, thanks to usefull thrusters. Graves is apparently a real time system...
And by the way, would it detect incomming balistic missiles too? That may be useful for the likes of Aster.
We French are generally too ambitious when it comes to weapon systems (not enough money for so many lethal ideas...), but we provide some amusing toys, indeed. I always wondered what were the real possibilities of this ship (http://www.netmarine.net/bat/divers/monge/photos.htm), for instance...
Last but not least: thanks to all Americans that are now bashing French haters, we have heard enough, your support is appreciated. I hope Sarkozy will not be the fool he pretends to be. :-)
I am not Remy Mouton, unfortunately: http://remy.mouton.free.fr/art/