Radar stealth technology aims to prevent aircraft detection by radar systems. It works by reducing an aircraft's radar cross-section through shape design and radar-absorbing materials. Aircraft shapes avoid orthogonal plates and use re-entrant triangles to interfere with and attenuate radar waves through incoherent scattering and destructive interference. Coatings like iron ball paint and Jaumann absorbers are also applied to aircraft surfaces to reduce detectability. Stealth aircraft additionally aim to reduce detection in other spectra and noise signatures. Radar stealth technology plays an important role in modern military operations by aiding secret missions and increasing a nation's defensive capabilities.

1. Radar Stealth Technology

2. 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.

3. Working Of Radars
 Calculation of location and shape
• The location and shape of the target is detected by using
DSP(Digital Signal Processing) methods.

4. 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.

5. 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.

6. For minimum RCS

7. Then we get the architecture like a bird

8. 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.

9. • Coatings are applied on the surface of stealth aircraft.
• Iron ball paint:-
It contains tiny spheres coated with carbonyl iron or ferrite.
• Jaumann absorber-
Jaumann layer consisted of two equally-spaced reflective surfaces
and a conductive ground plane.
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.

10. 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 )

11. 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.

12. THANK YOU
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