Question

What type of system can look at zero Doppler returns, compare them to a clutter map, and then determine whether the video return is ground clutter or a target?

A) Doppler Analyzer
B) Moving Target Indicator (MTI)
C) Clutter Discriminator
D) Zero-Doppler Detector

Answer 1

A Moving Target Indicator (MTI) system is capable of analyzing zero Doppler returns against a clutter map to differentiate between ground clutter and moving targets by using Doppler shift characteristics.

Step-by-step explanation:

The type of system that can look at zero Doppler returns, compare them to a clutter map, and then determine whether the video return is ground clutter or a target is a Moving Target Indicator (MTI). MTI systems are designed to discriminate between stationary objects and moving targets by examining the Doppler shift that occurs in the frequency of the reflected signals from targets. Because stationary objects produce zero Doppler returns, the system can use previously created clutter maps to filter out these stationary returns, allowing only the returns from moving targets to be displayed or processed further.