Which value defines the Nyquist limit in pulsed Doppler measurements?

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Multiple Choice

Which value defines the Nyquist limit in pulsed Doppler measurements?

Explanation:
The Nyquist limit is half of the pulse repetition frequency used in pulsed Doppler. Because Doppler data are sampled at the PRF, the highest unambiguous Doppler frequency you can measure is PRF/2. If the Doppler shift exceeds this, aliasing occurs, causing the measured frequency to wrap around and potentially misrepresent velocity or direction. Therefore, the correct value defining the Nyquist limit is PRF divided by two.

The Nyquist limit is half of the pulse repetition frequency used in pulsed Doppler. Because Doppler data are sampled at the PRF, the highest unambiguous Doppler frequency you can measure is PRF/2. If the Doppler shift exceeds this, aliasing occurs, causing the measured frequency to wrap around and potentially misrepresent velocity or direction. Therefore, the correct value defining the Nyquist limit is PRF divided by two.

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