Define the term "clutter" as it relates to RADAR.

"Clutter" in the context of RADAR refers to excessive background signals or objects that interfere with the ability to accurately detect and identify the primary targets of interest. This can include physical objects such as buildings, trees, or terrain that reflect RADAR waves, as well as other electronic interference that creates a 'noise' effect on the displayed image. As a result, the presence of clutter can obscure the signals from actual targets, making it difficult for operators to differentiate between important data and irrelevant information.

Understanding clutter is crucial for RADAR operators because it impacts the effectiveness of RADAR in different environments. Techniques such as signal processing and filtering are often employed to minimize the impact of clutter, enhancing target detection accuracy.