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How do tuning forks test radar accuracy?

April 26, 2017forks radar Test tuning

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How do tuning forks test radar accuracy?

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(A)A radar can measure a vibrating tuning fork, registered speed is proportional to fork resonance. An accurate radar should register a certain speed knowing the fork resonance. For example a tuning fork that resonates at 2000 Hertz (Hz) should register a speed of 64 mph on an X band radar. Note 2000 Hz should register 28 mph on a K band radar. Note 2 tuning forks (that resonate at different frequencies) are required to test moving mode radar. One fork for ground speed and one for target speed.