3. Radar Stealth Technology
• RADAR means “Radio Detecting And Ranging” and
STEALTH means “Avoiding Detection”.
• Whereas ‘Radar Stealth Technology’is used to prevent the detection
of aircrafts or planes from radar systems.
4. Working Of Radars
Calculation of location and shape
• The location and shape of the target is detected by using
DSP(Digital Signal Processing) methods.
5. Concept of RCS
• RCS means Radar Cross-section Area.
• Radar cross section is the measure of a target's ability to reflect radar
signals in the direction of the radar receiver.
• Target’s RCS(F) is visualized as the product of three factors:
F = Projected cross section x Reflectivity x Directivity.
6. Stealth Technology
• No aircraft is totally invisible to radar, stealth technology prevents
conventional radar from detecting or tracking the aircraft effectively.
• By employing a combination of features to interfere with radar as well as
reduce visibility in the infrared, visual and radio frequency (RF) spectrum
• Geometry:
• Avoiding orthogonal metal plates because this causes reflections.
10. Absorption of electromagnetic waves:
• Internal construction that must be re-entrant triangles, so that radar waves
reflecting off the internal faces and losing energy.
• Incoherent scattering +destructive interference+10dB of attenuation + the
pyramid shapes + maximize number of bounces.
11. • Coatings are applied on the surface of stealth aircraft.
• Iron ball paint:-
It contains tiny spheres coated with carbonyl iron or ferrite.
Avoiding Infrared Detection:
• Heat is developed when the machines in aircraft are working and also due
to friction of air.
• Use compressed gas or liquid nitrogen to cool their internal parts.
12. Preventing noise detection:
• Aircrafts use slow-turning propellers to avoid being heard by enemy troops
below.
• High altitude.
• High speed.
Applications:-
• Military Operations-
Secret operations which is confidential.
Emergency protecting.
To become a powerful weapon nation.
(a strong nation can maintain peace in any situation )
13. Conclusion:
• In Modern days this Stealth Technology is playing a vital role in
Military operations. Every fighter plane designs is claiming to have
some sort of stealth technology to avoid detection there by reducing
the odds of a successful attack.
• This Radar Stealth technology is bringing a revolution in military
operations of the world.
• Having own technology can save money and nation.
