What altitude range can the Radar Altimeter measure?

The Radar Altimeter is designed to measure altitude above ground level (AGL) by sending radio waves to the ground and detecting the time it takes for the waves to return. This capability makes it highly effective for low-altitude operations, commonly used during landing and low-level flight. The measurement range of 0 feet to 50,000 feet reflects the radar altimeter’s operational versatility, allowing it to be used in various phases of flight, including approach, decent, and low-level navigation.

This range also enables pilots to obtain accurate terrain and obstacle clearance information at higher altitudes, providing enhanced situational awareness during flight operations. By covering a broad spectrum that includes both low and high-altitude measurements, the radar altimeter ensures that it can meet the diverse needs of flight profiles, particularly in a variety of operational scenarios.