Originally Posted by
Pontius Navigator
Bing, what was impossible becomes the improbable. This then becomes the possible, probable before becoming a certainty.
You can never say never.
Oh I'm certain if you wanted to invest in an actual spy satellite to do the job you could do that today, you're just listening out for transmissions in certain areas of the frequency spectrum which is what a radar warning receiver does. Orbital mechanics makes it difficult trying to maintain 24/7 coverage but you wouldn't need to faff around looking for weird interference patterns building up. I just don't think being able to do it with several days worth of open source data is anything to worry about.