Radarhoogtemeters
Radarhoogtemeters, or radarhoogtemeters in Dutch, are avionics sensors that measure an aircraft’s height above the terrain directly beneath it. They provide precise height information at low altitude, supporting approaches, landings and other manoeuvres where accurate altitude above ground is essential. They are used in civil aviation, helicopters and many unmanned aerial systems to maintain safe clearance from terrain or obstacles.
Principle of operation: A radarhoogtemeter sends downward-directed radio pulses and detects their reflections from the ground.
Construction and performance: Most radarhoogtemeters operate in microwave bands such as X- or Ku-band and may
Applications and limitations: In flight, radarhoogtemeters support precision approaches, short-field landings and low-altitude operations, and assist
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