1. P.A.R. PRINCIPLES

2. Why do we need a PAR? To enable an aircraft to land in bad weather or poor visibility.

3. What information do we need to land an aircraft? Range (Distance) Bearing (Direction) Height

4. How do we obtain this information? Range: Measurement of time taken for RF pulse to travel there and back from target. 1 radar nautical mile = 12.36µs

5. How do we obtain this information? Bearing: Scan the radar beam in Azimuth (AZ). Height: Scan the radar beam in Elevation (EL).

6. PAR USES 2 ANTENNAE EL AZ

7. PAR System Components Antenna System Lightning Rod Mast (UK & OVERSEAS SITES) Radar Cabin

8. PAR System Components Azimuth Elevation (UK & OVERSEAS SITES)

9. PAR Radar picture

10. +7 Glideslope: 2.5°-3° Elevation +15 -15 Azimuth Range: 300ft minimum to 20nM (15nM Rain)

12. PAR PRINCIPLES Any Questions?