moon_light
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@gambit : what do you think about this assessment here :
And this photo
https://basicsaboutaerodynamicsandavionics.wordpress.com/2016/03/29/electronic-countermeasure-ecm/
https://basicsaboutaerodynamicsandavionics.wordpress.com/2016/04/12/radar-electronic-countermeasure/A common misconception is that any low-frequency radar can render stealth useless regardless of their transmitting power or aperture size (Ex: Tikhomirov NIIP L-band transmitter on the leading edge of Flanker series are often cited by enthusiasts as a counter stealth system ) , that is wrong however , while it true that stealth aircrafts will have higher RCS in Mie region.It is important to remember that given equal radar aperture area , lower frequency radars will have much lower gain compared to high-frequency radars , thus, they cannot concentrate energy as much and more vulnerable to jamming , lower gain also give them lower accuracy. As a result, most low-frequency radars have much bigger transmitting antenna compared high-mid frequency radar ,it is also the reason that fighters fire control radar still work in X-band, because a L-band , VHF band radars of similar size would be too inaccurate for any purpose others than early warning (their accuracy can be estimated by radar gain equation ).Simulation done by MBDA also shown that despite operating within low-frequency range from UHF to F band , AWACs radar still struggle to detect stealth aircrafts from their frontal aspect.
Another common misconception is that the lower the operating frequency of the radar ( longer wavelength ) , the better it would perform again stealth assets , that is wrong, however , as can be seen from table above , even within Mie region , target’s RCS fluctuate significantly and can be smaller than value measured in optical region depending on exact frequency and target size. It is also important to note that if radar wavelength is too long compared to target dimension , it can fall into Rayleigh region , in which target’s RCS can get much smaller than in optical region
And this photo
https://basicsaboutaerodynamicsandavionics.wordpress.com/2016/03/29/electronic-countermeasure-ecm/