Posted: Sun Oct 28, 2018 8:22 pm
Triplebaconation wrote:You know NS isn't real, right?
Things could not have been produced by God in any other way or in any other order than is the case
Because sometimes even national leaders just want to hang out
https://forum.nationstates.net/
Triplebaconation wrote:You know NS isn't real, right?
New Vihenia wrote:Someone pls remind me on why we dont have Airborne carrier with parasite fighter squadron inside it ?
The Akasha Colony wrote:If a modern replacement to KH-9 Hexagon with similar wide-area surveillance capabilities were to be developed, would conventional film still be required?
Given the tremendous data bandwidth, storage volumes, and power required to handle such data digitally, I imagine that a film setup might still be simpler and a faster way to downlink the data (with little chance of jamming or cyberattack). But the cost of more advanced modern optics would also increase the preference toward extended endurance over the four or five return capsules KH-9 carried.
Improvements in computer analysis seems to have advanced enough to make processing such large volumes of imagery reasonably feasible on a more regular and ongoing basis which would also encourage more regular use which might also encourage the development of a more reusable digital solution.
Perhaps a better solution might be to use a larger number of smaller satellites each with more limited coverage but also needing less bandwidth and storage to operate?
The Akasha Colony wrote:If a modern replacement to KH-9 Hexagon with similar wide-area surveillance capabilities were to be developed, would conventional film still be required?
Given the tremendous data bandwidth, storage volumes, and power required to handle such data digitally, I imagine that a film setup might still be simpler and a faster way to downlink the data (with little chance of jamming or cyberattack). But the cost of more advanced modern optics would also increase the preference toward extended endurance over the four or five return capsules KH-9 carried.
Improvements in computer analysis seems to have advanced enough to make processing such large volumes of imagery reasonably feasible on a more regular and ongoing basis which would also encourage more regular use which might also encourage the development of a more reusable digital solution.
Perhaps a better solution might be to use a larger number of smaller satellites each with more limited coverage but also needing less bandwidth and storage to operate?
The Akasha Colony wrote:If a modern replacement to KH-9 Hexagon with similar wide-area surveillance capabilities were to be developed, would conventional film still be required?
Given the tremendous data bandwidth, storage volumes, and power required to handle such data digitally, I imagine that a film setup might still be simpler and a faster way to downlink the data (with little chance of jamming or cyberattack). But the cost of more advanced modern optics would also increase the preference toward extended endurance over the four or five return capsules KH-9 carried.
Improvements in computer analysis seems to have advanced enough to make processing such large volumes of imagery reasonably feasible on a more regular and ongoing basis which would also encourage more regular use which might also encourage the development of a more reusable digital solution.
Perhaps a better solution might be to use a larger number of smaller satellites each with more limited coverage but also needing less bandwidth and storage to operate?
The Manticoran Empire wrote:My concern would be interception or failure of the return capsules. I think that a way to get around the interception issue would be to have the download occur over friendly territory, whether using capsules or digital download.
The digital one will probably be what any 21st century KH-9 uses, simply for reasons of economy.
Roskian Federation wrote:I'm pretty sure that this could be processed via digital solutions, such as like hundred+ terabyte hard drives. I don't think film would be required at all if im entirely honest.
New Vihenia wrote:Or make re-usable the whole satellite down a.l.a Soviet era early Zenit. Tho for large diameter optics i can see the whole assembly is going to be quite large.
The Akasha Colony wrote:Not an insurmountable one but one that would certainly drive up the cost of a digital system.
The Akasha Colony wrote:If a modern replacement to KH-9 Hexagon with similar wide-area surveillance capabilities were to be developed, would conventional film still be required?
Given the tremendous data bandwidth, storage volumes, and power required to handle such data digitally, I imagine that a film setup might still be simpler and a faster way to downlink the data (with little chance of jamming or cyberattack). But the cost of more advanced modern optics would also increase the preference toward extended endurance over the four or five return capsules KH-9 carried.
Improvements in computer analysis seems to have advanced enough to make processing such large volumes of imagery reasonably feasible on a more regular and ongoing basis which would also encourage more regular use which might also encourage the development of a more reusable digital solution.
Perhaps a better solution might be to use a larger number of smaller satellites each with more limited coverage but also needing less bandwidth and storage to operate?
Special Aromas wrote:40,000km2 photos available every five days or whether 1,000km2 imagery
New Vihenia wrote:is 8 meter diameter mirror practical for spy satellite ?
Apparently for 0.1 m resolution from 750 km at visible light wavelength. That's the required size. But i guess we dont really have rocket that big yet. except the unbuilt Energia-Vulkan.
The Akasha Colony wrote:If a modern replacement to KH-9 Hexagon with similar wide-area surveillance capabilities were to be developed, would conventional film still be required?
Given the tremendous data bandwidth, storage volumes, and power required to handle such data digitally, I imagine that a film setup might still be simpler and a faster way to downlink the data (with little chance of jamming or cyberattack). But the cost of more advanced modern optics would also increase the preference toward extended endurance over the four or five return capsules KH-9 carried.
Improvements in computer analysis seems to have advanced enough to make processing such large volumes of imagery reasonably feasible on a more regular and ongoing basis which would also encourage more regular use which might also encourage the development of a more reusable digital solution.
Perhaps a better solution might be to use a larger number of smaller satellites each with more limited coverage but also needing less bandwidth and storage to operate?
Danternoust wrote:https://en.wikipedia.org/wiki/North_American_X-15
https://en.wikipedia.org/wiki/Sr-71
If you can afford a spy satellite, you can afford this.
It isn't required to mimic your nation's broken procurement process.
Special Aromas wrote:Correct.
The question is whether you need the 40,000km2 photos available every five days or whether 1,000km2 imagery transmitted in real time are more useful to you. The NRO & CIA decided that real-time image availability was more important and KH-9 became the last US film satellite program.
KH-11 transmits data at a frequency too high to pass through the atmosphere and instead uses a relay system of other satellites before transmitting back to earth, which keeps the probability of intercept fairly low. It's also doubtful it stores any data on-board as it's unnecessary with a full-time data link.
Danternoust wrote:So, you're saying we can have very accurate photos, more accurate than Google Maps, which mostly uses imagery from planes?
New Vihenia wrote:is 8 meter diameter mirror practical for spy satellite ?
Apparently for 0.1 m resolution from 750 km at visible light wavelength. That's the required size. But i guess we dont really have rocket that big yet. except the unbuilt Energia-Vulkan.
The Technocratic Syndicalists wrote:Yes. No digital telescope can match the resolution and field of view of an OBC.
One solution would be to put the OBC in an X-37 type vehicle which can be launched and recovered as needed.
Danternoust wrote:My nation's navy and air force is one-fuel, hydrogen. I suppose this might reduce aircraft range more than the naval ships, but it won't be that bad, would it?
Danternoust wrote:My nation's navy and air force is one-fuel, hydrogen. I suppose this might reduce aircraft range more than the naval ships, but it won't be that bad, would it?
The Manticoran Empire wrote:Danternoust wrote:My nation's navy and air force is one-fuel, hydrogen. I suppose this might reduce aircraft range more than the naval ships, but it won't be that bad, would it?
It will have reduced takeoff weight, due to hydrogen being lighter than air. However, the nature of hydrogen requires that it be stored in the fuselage, requiring a longer fuselage that results in a loss in performance. I would say just stick with normal aviation fuel.
Danternoust wrote:My nation's navy and air force is one-fuel, hydrogen. I suppose this might reduce aircraft range more than the naval ships, but it won't be that bad, would it?