What is one limitation of decreasing the repetition rate (PRF) in phased-array systems?

Decreasing the pulse repetition frequency (PRF) in phased-array systems mainly introduces the limitation of potentially losing information. This occurs because a lower PRF results in fewer pulses being transmitted per unit of time. With fewer pulses, there are fewer data points collected during inspections, which can compromise the ability to detect and characterize flaws effectively.

When the PRF is low, it may also elongate the time needed to gather sufficient data for accurate analysis, especially in high-speed scanning applications. This limitation is particularly critical in scenarios where quick detection and resolution of defects are crucial for ensuring structural integrity. The effectiveness of phased-array systems relies on their ability to rapidly acquire and process data, making a high PRF vital for optimal performance.