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could the GeoEye-1 spy satellite have a "classified mode"?



 
 
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  #1  
Old October 11th 08, 05:04 PM posted to sci.space.policy
gaetanomarano
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Default could the GeoEye-1 spy satellite have a "classified mode"?

..

everybody knows that the GPS satellites system has two operational
modes: a "declassified" commercial/low accuracy mode and a
"classified" military/higher accuracy mode

well, my question is:

could the Google Intelligence Agency (GIA) GeoEye-1 new spy satellite
have also a VERY HI-RES "classified mode"?

GeoEye-1 Wired article:

http://blog.wired.com/wiredscience/2...e-1-super.html

Google Intelligenge Agency (GIA) logo/patch/parody:

http://www.ghostnasa.com/gia.jpg

..
  #2  
Old October 11th 08, 06:04 PM posted to sci.space.policy
Allen Thomson
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Default could the GeoEye-1 spy satellite have a "classified mode"?




could the Google Intelligence Agency (GIA) GeoEye-1 new spy satellite
have also a VERY HI-RES "classified mode"?


Not if it stays at the orbital altitude it now has.

I've looked at how much better it might get than the nominal 43 cm
with the current aperture. By biasing the response toward the blue end
of the spectrum and making approprate adjustments to the optics and
detectors, they *might* get down to the 35 cm range. But I wouldn't
bet much money on it.

Of course, they could simply drop the altitude considerably at the
cost of lifetime and pick up a factor of two or so.
  #3  
Old October 11th 08, 08:36 PM posted to sci.space.policy
[email protected]
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Default another clueless GM post

On Oct 11, 12:04*pm, gaetanomarano wrote:
.

everybody knows that the GPS satellites system has two operational
modes: a "declassified" commercial/low accuracy mode and a
"classified" military/higher accuracy mode

well, my question is:

could the Google Intelligence Agency (GIA) GeoEye-1 new spy satellite
have also a VERY HI-RES "classified mode"?


1. The higher accuracy mode for GPS is not "classified", it is just a
restricted timing signal. It exists all the time

2. There is no need for a "classified" mode for GeoEye.

3. High resolution would require a larger aperture/mirror. Can't hide
the fact of that
  #4  
Old October 11th 08, 09:20 PM posted to sci.space.policy
gaetanomarano
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Location: Italy
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Default could the GeoEye-1 spy satellite have a "classified mode"?

On 11 Ott, 19:04, Allen Thomson wrote:


Not if it stays at the orbital altitude it now has.


if it works (also) in a "classified mode" it may have (also) a
"classified optics" with proper specs

..
  #5  
Old October 11th 08, 09:28 PM posted to sci.space.policy
gaetanomarano
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Location: Italy
Posts: 493
Default another clueless GM post

On 11 Ott, 21:36, wrote:


1. *The higher accuracy mode for GPS is not "classified"


probably it's not the right term to say that's it can be used only by
military


2. *There is no need for a "classified" mode for GeoEye.


my opinion is that Google (already) is something MORE (much more and
much dangerous!) than the "free stuffs/don't be evil" company it wants
we believe to


3. *High resolution would require a larger aperture/mirror. Can't hide
the fact of that


if it has (also) a "classified mode" (clearly) it's hardware specs
isn't revealed to press...

..
  #6  
Old October 11th 08, 09:33 PM posted to sci.space.policy
Alan Anderson
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Posts: 335
Default could the GeoEye-1 spy satellite have a "classified mode"?

In article
,
gaetanomarano wrote:

.

everybody knows that the GPS satellites system has two operational
modes: a "declassified" commercial/low accuracy mode and a
"classified" military/higher accuracy mode


There's nothing "classified" about the high accuracy timing signal.
It's just encrypted. The public timing signal for non-military use
gives less accurate positioning information.

Or it did, until Selective Availability was turned off. For years, the
former "low accuracy" unencrypted signal has lacked the random errors
that used to be introduced to intentionally degrade the results. So now
every GPS receiver, military or not, gets the same high accuracy.
  #7  
Old October 11th 08, 09:41 PM posted to sci.space.policy
Alan Anderson
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Posts: 335
Default could the GeoEye-1 spy satellite have a "classified mode"?

In article
,
gaetanomarano wrote:

On 11 Ott, 19:04, Allen Thomson wrote:


Not if it stays at the orbital altitude it now has.


if it works (also) in a "classified mode" it may have (also) a
"classified optics" with proper specs


Such "classified optics" would still be bound by the Rayleigh limit.
The size of the telescope's aperture determines its minimum angular
resolution.
  #8  
Old October 11th 08, 09:49 PM posted to sci.space.policy
BradGuth
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Posts: 21,544
Default could the GeoEye-1 spy satellite have a "classified mode"?

On Oct 11, 1:33 pm, Alan Anderson wrote:
In article
,

gaetanomarano wrote:
.


everybody knows that the GPS satellites system has two operational
modes: a "declassified" commercial/low accuracy mode and a
"classified" military/higher accuracy mode


There's nothing "classified" about the high accuracy timing signal.
It's just encrypted. The public timing signal for non-military use
gives less accurate positioning information.

Or it did, until Selective Availability was turned off. For years, the
former "low accuracy" unencrypted signal has lacked the random errors
that used to be introduced to intentionally degrade the results. So now
every GPS receiver, military or not, gets the same high accuracy.


Of course their best possible resolution is fully encrypted and very
much need to know, as otherwise why would our MI5/CIA bother with
utilizing such images if just anyone could see exactly whatever they
get to see?

~ BG
  #9  
Old October 11th 08, 09:59 PM posted to sci.space.policy
gaetanomarano
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Location: Italy
Posts: 493
Default could the GeoEye-1 spy satellite have a "classified mode"?

On 11 Ott, 22:33, Alan Anderson wrote:


There's nothing "classified" about the high accuracy timing signal. *
It's just encrypted.


yes, "encrypted" is the right term, not "classified"

..
  #10  
Old October 11th 08, 10:03 PM posted to sci.space.policy
gaetanomarano
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Location: Italy
Posts: 493
Default could the GeoEye-1 spy satellite have a "classified mode"?

On 11 Ott, 22:41, Alan Anderson wrote:


Such "classified optics" would still be bound by the Rayleigh limit. *
The size of the telescope's aperture determines its minimum angular
resolution.


it may be true for the known/revealed optics, but, if they have add a
2nd (classified) device with better specs, clearly they'll never
reveal it to the press

..
 




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