1987, pp 281-342

Clutter Characteristics and Effects

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Abstract

Since the earliest days of radar, detection of unwanted objects have interfered with the detection of desired targets. These unwanted returns are known as clutter, and there is a substantial amount of literature available on radar clutter dating from World War II to the present. Whether particular returns are desired or not depends on the situation. For example, while one aircraft might be using the pattern of radar returns from terrain by which to navigate, a radar in an AWACS aircraft at higher altitude might be attempting to detect the first aircraft in the presence of this same pattern of ground returns.