Which change would lead to a reduction in frame rate?
Increasing the number of focal zones
Increasing the pulse repetition frequency (PRF)
Decreasing the depth
Decreasing the sector width
Comprehensive and Detailed Explanation From Exact Extract:
Each additional focal zone requires extra transmissions per scan line, which slows down frame acquisition, thereby reducing the frame rate.
Principles and Instrumentation state:
"Increasing the number of focal zones lowers frame rate because multiple pulses are needed per scan line for each focal depth."
Increasing PRF (B) allows faster data acquisition.
Decreasing depth (C) shortens round-trip time, increasing frame rate.
Decreasing sector width (D) reduces scan lines, increasing frame rate.
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