posted on Dec, 14 2005 @ 12:20 PM
I would have phased the original question of this thread to "What can be done to reduce the effectiveness of stealth technology", because trying to
"beat" stealth makes it seem as if this was a black & white problem, which it isn't.
Any aitcraft can be stealthly, depending on the variables. A B-52 is very stealthy....to an I-band radar over 500 miles away. Conversely, a B-2 can
be easily seen.....to an L-band radar at 10 km. It is all a matter of perspective...and variables such as range, elevation, RCS, output power,
frequency, waveform, SNR, etc.
Stealth is not perfect, and it will only be a matter of time before practical CLO radars will be readily available to most nations. However, that
time is not now, nor is it likely to be soon. Thus, the US continues to develop LO aircraft (that do not substantially sacrifice performance)
because, until further notice, wel will be able to continue to exploit our enemies lack of effective CLO systems.
Mitigating stealth comes down to 3 basic physics problems:
1) Output Power. If you put enough watts of RF into the sky - you will get a return. Radars with peak output powers of over 500kW can detect stealth
targets at appreciable ranges. The problem is that these systems are really, really big. If it is a land site, well then, say good-bye thanks to EW
and ARH attacks. The basic weakness of big land sites - they cannot move quickly, if at all, and therefore can be planned against and countered. To
make these tranmitters mobile, you must have state-of-the-art solid state transmit amplifiers and cooling, which most countries currently do not
possess. High amounts of output power also produce alot of noise and ground clutter, which must be identified, filtered and rejected, which leads
2) Signal Processing Power. In order to pick a stealth target out of the background noise and clutter at medium and long ranges, you must have a
signal processor that has double and triple-digit GFLOPS horsepower. And that is just the start. To effectively run that processor, you will need
precise and effective noise reduction and clutter rejection algorithms that can sort the wheat from the chaff. Again, not a problem for large land
sites, and maybe ships, but its hard to put a CPU (and its associated power and cooling) in an aircraft or mobile system, unless you are a world
leader in miniaturized electronic systems.
3) Bistatic Arrays. Radar signals bouncing of your target and away from your receiver? Then move your receiver away from your transmitter. Bistatic
arrays help defeat the problem of runaway radar returns, but...bistatic arrays are usually big and fixed systems that are vulnerable to
countermeasures. The question is: who can produce a radar that is both bistatic and highly mobile?
The effectiveness of stealth can be reduced. I have personal knowledge of two different systems that utilize one or more of these concepts, and both
are effective in their CLO mission. As far as I know, no other country has come close to replicating these systems and/or their effectiveness. Not