What does the term "range ambiguity" in RADAR systems signify?

Range ambiguity in RADAR systems refers to the uncertainty about a target's distance. This phenomenon occurs when the radar system is unable to distinctly identify which pulse of the transmitted signal corresponds to the returning echo from a target. This situation typically arises when multiple pulses are transmitted in quick succession, and if the return signals overlap, it becomes challenging to determine the precise radial distance to the target. This confusion can lead to misinterpretations of the target's position or even the identification of false targets within the radar's coverage area.

Understanding range ambiguity is crucial for radar operators, as it directly impacts the accuracy and reliability of target tracking and identification. Systems may employ techniques such as increasing the pulse repetition frequency (PRF) or using different modulation schemes to help alleviate range ambiguity, thereby enhancing the radar's performance in complex environments. The other options do not pertain to the specific issue of distance-related ambiguity that is central to this concept.