As depth of view decreases, pulse repetition period _______.

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Multiple Choice

As depth of view decreases, pulse repetition period _______.

Explanation:
Pulse repetition period is tied to how deep the system is imaging. It depends on the round-trip time for sound to reach the farthest point in the view and return, which scales with depth: PRP = 2 × (maximum depth) / speed of sound. When the depth of view decreases, the deepest point is shallower, so the round-trip distance and travel time shrink. That makes the interval between pulses shorter, i.e., the pulse repetition period decreases. Consequently, the system can emit pulses more frequently (higher PRF) for shallower imaging.

Pulse repetition period is tied to how deep the system is imaging. It depends on the round-trip time for sound to reach the farthest point in the view and return, which scales with depth: PRP = 2 × (maximum depth) / speed of sound. When the depth of view decreases, the deepest point is shallower, so the round-trip distance and travel time shrink. That makes the interval between pulses shorter, i.e., the pulse repetition period decreases. Consequently, the system can emit pulses more frequently (higher PRF) for shallower imaging.

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