On 11 Jan 2004 01:10:51 -0800, (Michael Petukhov) wrote:

"Matteo" wrote in message ...
Michael Petukhov wrote:
RuAF have received first 10 new NEBO-U long range antistealth radars
working in the range of meter's waves. It was designed in Nizhniy

I don't want to argue the fact hat low frequency radar can detect stealth
aircraft; pratically everybody knows it since low frewuency radar are very
old stuff. Americans, english and germans realized them still in 1940s since
low freq. radar were simpler to build.
But they have some drawback that strongly reduce their effectiveness in real
combat.
First they share frequencies with UHF telecomunication devices like radio
and TV so, unless you're figthing in the middle of the desert and your
soldiers don't have radios, they will pick up every piece of electromagnetic
garbage created by radio and TV broadcasting and show it like an aircraft.

No neccesary it depends on signal shape and antenna.

Second, since antenna's dimensions are proportional to wave lenght, in order
to generate a narrow beam they must use very big anennas, something like a
three stories building! (quite difficult to hide...)

true, it is around that size. However Nebo-u is truck based radar.

Third, due to the low frequency they have poor data rate, enough for
detection, but not for target tracking.

That's exactly what was solved in nebo-u. It is first 3D radar at high
accuracy. The guys received the state prize exactly for that achivement.

Michael

Bye

Russia could not afford, much less build, an effective "anti-stealth" radar.
They cannot even tow a sub without it sinking.

Al Minyard