The advanced signal data processor (ASDP) permits up to how many permanent echoes?

The advanced signal data processor (ASDP) permits up to how many permanent echoes?

• A. 15
• B. 20
• C. 30
• D. 25

Answer: (D)

Permanent echoes are fixed clutter returns from terrain and man-made objects that the radar system learns and stores so they don’t get mistaken for actual weather signals. The advanced signal data processor uses a finite memory for these echoes to keep processing fast and predictable. The maximum number it can hold is twenty-five, and this limit reflects the balance between representing common persistent clutter and maintaining system performance. If more persistent clutter sources appear, space isn’t available for new entries until some capacity is freed, which is why this upper bound matters.

Permanent echoes are fixed clutter returns from terrain and man-made objects that the radar system learns and stores so they don’t get mistaken for actual weather signals. The advanced signal data processor uses a finite memory for these echoes to keep processing fast and predictable. The maximum number it can hold is twenty-five, and this limit reflects the balance between representing common persistent clutter and maintaining system performance. If more persistent clutter sources appear, space isn’t available for new entries until some capacity is freed, which is why this upper bound matters.