Why? It's an excellent recruiting tool. I used to read it as a kid (along with every other paper or digital encyclopedia I could get my hands on), and it certainly made me interested in the CIA.
This is very cool, thanks for sharing. There are many industries and academic fields where Matlab has gone out of fashion (I work in one), and my experience has been that there's a lot of over the top negativity about Mathworks products, centering mostly on the license and business model. But I think there's a lack of awareness of just how superior Matlab and Simulink are to all alternatives in some domains. All that to say: don't let the Matlab hate get to you, you're using the right tool for the job.
This is a fun dataset. The paper leaves a slight misimpression about channel statistics: IIUC, they do not correct for sampling propensity to reweight when looking at subscriber counts (it should be weighted ~1/# of videos per channel since the probability of a given channel appearing is proportional to the number of public videos that channel has, as long as the sample is a small fraction of the population).
It also includes the Apple One bundle. I wonder if the bundles complicate that breakdown — I certainly never use Apple Music or Arcade, and almost never TV+.
Anecdotally, I cannot figure out how to cancel One without losing my iCloud photo library. As soon as I do figure that out, I'll be iCloud only.
I don't believe I said that. You can draw your own conclusion from the fact that it is within their capabilities to detect, localize, and to some extent classify a wide range of sources in this region of the ocean.
What you won't find is a lot of information about those capabilities in the public domain. Just consider that what _is_ known tells us that we had these capabilities in the 1950s, and that they were continuously improved upon throughout the cold war. This is not Area 51 conspiracy speculation; it is bread-and-butter NRL stuff that is more than half a century old at this point and is classified for good reasons.
Hydrophones don't need to be nearby or even at a similar depth. The SOFAR channel acts as a waveguide and will duct sources from other depths as long as the bottom is below the critical depth. As others have said, this part of the North Atlantic is one of the most heavily monitored parts of the ocean as well. No sci-fi physics necessary — this has been done continuously since the 1950s.
If anyone from Starlink is reading this thread: Add a Lat/Lon option for addresses in the service address entry form.
Many rural homes have mailing addresses that don't resolve correctly. For example, the input form forced me to use "Anacortes, WA" for my house in the San Juans. The islands are a perfect Starlink test market, whereas Anacortes has plenty of broadband options.