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

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Presentation on theme: "P.A.R. PRINCIPLES. Why do we need a PAR? To enable an aircraft to land in bad weather or poor visibility."— Presentation transcript:

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 Azimuth Range: 300ft minimum to 20nM (15nM Rain)

11

12 PAR PRINCIPLES Any Questions?


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