It's rumored that both China and Russia have radar systems capable of detecting stealth aircraft. Nobody will know for sure unless shots are fired though and hopefully that never happens.
The other area where America has a military tech lead is in submarines (at least over China, question mark about Russia). However, there are also rumors that China has found some sort of countermeasure as evidenced by that American sub crashing into an underwater mountain last year. Either the US Navy is so fucked up that they're crashing subs into immovable objects (honestly not impossible given that their ships hit shit all the time) or China has a weapon that can fuck with their systems.
I definitely hope we never find out as it would mean WW3 and a likely nuclear holocaust. I do expect that stealth air craft detection is possible, especially with modern technology where you can integrate multispectrum data. Radar is just one way to look for the aircraft, it produces a whole spectrum of emissions, such as heat and sound. These are pretty much impossible to hide, and I imagine that once you see an anomaly in one spectrum it allows to check more closely across different spectrums to home in on the target.
In terms of subs, Russia and US are about even in terms of the number of subs, while China has the most at the moment. Russian and Yasen class subs can carry more weapons, and in particular hypersonics which US doesn't have. I imagine there's been a lot of tech transfer happening between Russia and China here as well which is what allowed China to develop their own fleet so rapidly. Also agree that the most likely scenario is that US sub got intercepted as opposed to having run into the ocean floor all on its own.
It's rumored that both China and Russia have radar systems capable of detecting stealth aircraft. Nobody will know for sure unless shots are fired though and hopefully that never happens.
The other area where America has a military tech lead is in submarines (at least over China, question mark about Russia). However, there are also rumors that China has found some sort of countermeasure as evidenced by that American sub crashing into an underwater mountain last year. Either the US Navy is so fucked up that they're crashing subs into immovable objects (honestly not impossible given that their ships hit shit all the time) or China has a weapon that can fuck with their systems.
I definitely hope we never find out as it would mean WW3 and a likely nuclear holocaust. I do expect that stealth air craft detection is possible, especially with modern technology where you can integrate multispectrum data. Radar is just one way to look for the aircraft, it produces a whole spectrum of emissions, such as heat and sound. These are pretty much impossible to hide, and I imagine that once you see an anomaly in one spectrum it allows to check more closely across different spectrums to home in on the target.
In terms of subs, Russia and US are about even in terms of the number of subs, while China has the most at the moment. Russian and Yasen class subs can carry more weapons, and in particular hypersonics which US doesn't have. I imagine there's been a lot of tech transfer happening between Russia and China here as well which is what allowed China to develop their own fleet so rapidly. Also agree that the most likely scenario is that US sub got intercepted as opposed to having run into the ocean floor all on its own.