Author Topic: Aircraft carriers and spy satellites  (Read 77536 times)

Offline Speedyhaste

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Re: Aircraft carriers and spy satellites
« Reply #200 on: 02/10/2024 01:42 pm »
This is kinda cool. Two US Navy carriers imaged with synthetic aperture radar from space. I'm pretty sure this is Norfolk. Don't know the carriers, but it should not be too hard to figure them out.

That is indeed Naval Station Norfolk.

To be precise it is Pier 14.

The Carrier on Berth 14S (lefthand aircraft carrier) is the USS George Washington (CVN 73). She berthed here 13 Jan 2024 after 13 days at sea conducting FRS/TRACON qualification.

The other is USS Harry S Truman on berth 14N. She berthed here 23 Jan 2024 after a four days at sea for trials after an extended 14-month PIA (Planned Incremental Availability).

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #201 on: 02/16/2024 01:54 am »

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #202 on: 02/22/2024 09:51 pm »
The aircraft carrier USS Dwight D. Eisenhower is missing from this photo because it is submerged.

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #203 on: 02/29/2024 11:10 pm »

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #204 on: 03/20/2024 01:13 pm »
These decoy silhouettes are supposed to fool automated visual recognition systems. I have my doubts.

https://www.twz.com/news-features/submarine-decoy-appears-on-russian-naval-base-pier

« Last Edit: 03/20/2024 06:43 pm by Blackstar »

Offline LittleBird

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Re: Aircraft carriers and spy satellites
« Reply #205 on: 03/21/2024 09:54 am »
These decoy silhouettes are supposed to fool automated visual recognition systems. I have my doubts.

https://www.twz.com/news-features/submarine-decoy-appears-on-russian-naval-base-pier

Especially if there are systems which pair more than one look angle.

Meanwhile, I'd be curious what you could find carrier-wise with Bellingcat's marine offering ? https://www.bellingcat.com/resources/2023/05/11/peering-beyond-the-clouds-a-guide-to-bellingcats-ship-detection-tool/

Offline ZachF

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Re: Aircraft carriers and spy satellites
« Reply #206 on: 03/21/2024 01:29 pm »
At quick glance, this appears kinda alarming--somebody can use an American satellite to find the location of US Navy forces in the open ocean. Of course, this doesn't provide info on the exact location of the ships, and the US Navy knows that bad guys are looking for them. But it's again a testament to how readily available this technology has become.

A decently sized SAR constellation could track every ship in the ocean simultaneously in real time. Will have huge consequences for Naval warfare.
artist, so take opinions expressed above with a well-rendered grain of salt...
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Offline LittleBird

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Re: Aircraft carriers and spy satellites
« Reply #207 on: 03/21/2024 02:12 pm »
At quick glance, this appears kinda alarming--somebody can use an American satellite to find the location of US Navy forces in the open ocean. Of course, this doesn't provide info on the exact location of the ships, and the US Navy knows that bad guys are looking for them. But it's again a testament to how readily available this technology has become.

A decently sized SAR constellation could track every ship in the ocean simultaneously in real time. Will have huge consequences for Naval warfare.

It'll be interesting to see if China expands its SAR system in GEO beyond a single location, for example: https://spacenews.com/china-launches-first-geosynchronous-orbit-radar-satellite/ though I imagine you have a lower orbit constellation in mind.

Offline Zed_Noir

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Re: Aircraft carriers and spy satellites
« Reply #208 on: 03/21/2024 02:21 pm »

A decently sized SAR constellation could track every ship in the ocean simultaneously in real time. Will have huge consequences for Naval warfare.

Not really. The various major military forces already have some sort real time tracking of surface naval units.

It is only during hostiles between major entities that interesting events will be play out.

Almost all civilian surveillance satellites have shutter control by their controlling authorities. Who will not hesitate to curtail viewing during contingencies.

SAR satellites in LEO are easy targets for direct ascent anti-satellite missiles. They even provide a guide path for the missiles to home in on.

Also jamming of the SAR satellites have to be consider during hostilities. Which will drastically degraded the capabilities of surveillance satellites with radar.

There is a huge difference with the operating environments between peace time and after hostilities have started. Reminder that the Russians bricked the Viasat satcom network during the start of their Ukrainian adventure.

Offline edzieba

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Re: Aircraft carriers and spy satellites
« Reply #209 on: 03/21/2024 02:35 pm »
Almost all civilian surveillance satellites have shutter control by their controlling authorities. Who will not hesitate to curtail viewing during contingencies.
There are restrictions on the specifics of what commercial providers can provide to third parties, but there are no remote-control-off-buttons on commercial satellites. The assumption has long been that any asset out in the open will have been observed by adversary satellites anyway (so don't leave things out in the open if you don't want them seen), and even degraded image restrictions are used very sparingly. You can go ask Planet for high resolution images of Groom Lake and get them, for example.

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #210 on: 04/11/2024 01:28 am »
USS Eisenhower, probably getting ready to head home.

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #211 on: 04/16/2024 01:25 pm »
Not sure if this is a satellite photo. It was posted without info. However, the planes don't fly directly over the ship, so based on the angle, I think this might be a satellite photo.

China has put mockups on the deck.


Update: This is most likely from a commercial airline flight. What threw me off was that previous photos taken from airliners were to the stern of the ship, not the side/overhead. So they must have adjusted the flight pattern for this.

https://www.twz.com/sea/deck-of-chinas-nearly-complete-carrier-now-hosting-multiple-aircraft-mockups

« Last Edit: 04/17/2024 11:49 pm by Blackstar »

Offline Emmettvonbrown

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Re: Aircraft carriers and spy satellites
« Reply #212 on: 04/16/2024 03:20 pm »
FC-31 naval fighter, or so it seems. https://en.wikipedia.org/wiki/Shenyang_FC-31

Offline LittleBird

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Re: Aircraft carriers and spy satellites
« Reply #213 on: 04/18/2024 08:10 am »
Almost all civilian surveillance satellites have shutter control by their controlling authorities. Who will not hesitate to curtail viewing during contingencies.
There are restrictions on the specifics of what commercial providers can provide to third parties, but there are no remote-control-off-buttons on commercial satellites. The assumption has long been that any asset out in the open will have been observed by adversary satellites anyway (so don't leave things out in the open if you don't want them seen), and even degraded image restrictions are used very sparingly. You can go ask Planet for high resolution images of Groom Lake and get them, for example.


Was interested to see Chinese Piesat constellation markets 0.5 metre resolution SAR https://www.piesat.cn/en-us/

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #214 on: 04/18/2024 02:42 pm »
During the past couple of years we have seen how the availability of easy/inexpensive/prolific commercial satellite imagery has played a big role in monitoring the Russian invasion of Ukraine. So-called open source intelligence (OSINT) analysts have used the imagery to monitor what has been happening and report on events, sometimes confirming or refuting claims that have been made by both sides. A notable early example was the April 2022 sinking of the cruiser Moskva, when available imagery confirmed that there were rescue and salvage vessels around the ship after a reported attack and shortly before it sank. Satellite imagery continues to play a role in this open source analysis of the war.

And it is continuing to play a role in other areas of the world. This thread has focused on imagery of aircraft carriers, and we continue to see how it is being used by open source analysts to monitor the readiness of China's newest and largest aircraft carrier, which is not currently named. The current speculation is that the ship may be formally named and accepted into the Chinese navy for sea trials next week. That is based upon some recent public and satellite photos of the ship at its dockyard. So we'll see in a week if the OSINT analysts are correct.



Addendum: Even South Korea has been considering building a big carrier, but they have decided to focus on their surface fleet first.
« Last Edit: 04/28/2024 04:03 pm by Blackstar »

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #215 on: 04/19/2024 12:02 pm »

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #216 on: 04/19/2024 12:03 pm »
.
« Last Edit: 04/19/2024 12:05 pm by Blackstar »

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #217 on: 04/21/2024 10:54 pm »

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #218 on: 04/24/2024 03:38 pm »
China's third carrier still not commissioned. Still pierside.
« Last Edit: 05/02/2024 02:59 am by Blackstar »

Offline Blackstar

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Re: Aircraft carriers and spy satellites
« Reply #219 on: 04/29/2024 05:18 pm »
China's carrier is now starting sea trials, so some new sea-level pictures. Also some overhead images, but mostly ones posted above and non-satellite images:

https://www.twz.com/sea/chinas-new-aircraft-carrier-pulls-away-from-its-pier-ahead-of-sea-trials

Also interesting, China is now discussing more about the origins of their carrier program, which apparently started with studies in 1989-1995:

https://twitter.com/foolsball/status/1786044541159534747



« Last Edit: 05/08/2024 08:24 pm by Blackstar »

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