KJ-500s are coming around pretty well, does anyone have aperture size estimates for the KJ-500? Rough estimates seem to be implying an amazing 1450 km detection vs 0 dBsm. Pity it isn't counterstealth, however.
Sorry, don't know where you get that estimation, but it seems to me that kind performance is not possible to be tested in real world, let alone meaningful or useful and even actually exists.
1. The earth is curved. An observer (AWAC) at altitude 10,000 meters (most cruising altitude) has a distance to horizon of 357.1km. That means beyond that distance, object below a "hidden height" is blocked by the earth's curve. The "hidden height" of a target 1450km away from the observer is 93km (90,000m). No airbreathing aircraft can fly that high. Most fighter jets can reach around 20km.
2. (I suppose that you mean dBm instead of dB
sm. 0 dBm is 1mW). Radar detection is never measured by distance vs power. Power (at the AWAC) of the return signal from the target 1450km away being 1mW? That signal has travelled 1450 x 2 = 2900km, and still remained 1mW. I don't think that kind of microwave emitter exists on earth.
No doubt, KJ-500 is advanced, and probably the most advanced AWAC in service
judging by its architecture and technical realization (
digital phase modulation). But it is still based on known technology.