🔍 Key Concepts

• Digital signal processing (DSP) in marine RADAR systems • How RADAR detects and displays weak or distant targets • Difference between signal quality and display/user interface features

💭 Think About

• Which choice describes something you could also have on a purely analog RADAR, and which choice requires digital processing to be possible? • Think about what happens to very small echo returns from small vessels, buoys, or rain clutter—what can digital processing do to those signals before they are displayed? • Which options are more about how the screen looks or how the operator feels, versus what happens to the raw echo signal itself?

✅ Before You Answer

• Identify which option directly affects the actual echo signal before it is shown on the screen. • Eliminate choices that talk mainly about display format or operator convenience, rather than the underlying RADAR performance. • Ask: which feature would most help you detect small or weak targets in poor conditions?