1. Introduction to Radar
Syarif Rousyan Fikri

3. RADAR
• RAdio Detection And Ranging
• Transmission and reception of Electro-Magnetic radiation via
echo location
• Detects object and its location by estimating object direction
and distance

4. TOA Estimation
• Estimating the Time of Arrival of the signal, we can compute
the distance of a target
Distance = Speed x Time

5. DOA Estimation
• Using multiple sensors, we will be able to estimate Direction
of Arrival with higher accuracy
• We can estimate the azimuth and or the elevation angles

6. Doppler Effect
• Doppler Effect
http://upload.wikimedia.org/wikipedia/commons/9/90/Speeding-carhorn_doppler_effect_sample.ogg
• Radar & Doppler Effect
http://www.youtube.com/watch?v=ql2Y-3hOfGY

7. Radar System

8. Radars in daily life

9. Bat Echolocation

10. Group Discussion
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What kind of wave is transmitted by this Bat?
What is the receiver of this radar-like system?
What kind of objects it detects?
Do you think this bat estimate the DOA and TOA of the
reflection?

11. Radar-like System
Some similar detection and ranging methods:
• SONAR (Sound Navigation and Ranging)
• LIDAR (Light Ranging and Detection)

12. Summary
• Radar can determine the position of an object
by estimating its direction and distance
• By employing Doppler Effect phenomenon
Radar can detect moving objects
• Radar and radar-like are widely used in civil
and military applications

13. Thank You
Bonus Soundtrack
http://www.youtube.com/watch?v=Hr-Y2Tt8gFE