Runway visual range, or RVR, precisely measures the distance that a pilot flying an ILS approach might expect to see when looking down the runway in those critical seconds just before touchdown. Because landing and some takeoff minimums are based on visibility, an operating RVR system is a vital operational element to support the high arrival and departure rates demanded at busy airports.
How It Works: Runway Visual Range
Key Takeaways:
- Runway Visual Range (RVR) is a critical airport system that precisely measures a pilot's expected visibility down the runway during crucial phases like ILS approaches and takeoffs, essential for meeting operational minimums and maintaining airport capacity.
- The RVR system integrates multiple sensors, including forward scatterometer visibility sensors placed along the runway, ambient light sensors, and runway light intensity monitors, to collect comprehensive data.
- These sensors gather data on atmospheric particle density and light conditions, which is then processed by a central unit to generate a precise RVR readout that air traffic controllers communicate to pilots.
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