Low probability of intercept radar
(重定向自Low Probability of Intercept)
A low-probability-of-intercept radar (LPIR) is designed to be difficult to detect by passive radar detection equipment (such as a radar warning receiver – RWR) while it is searching for a target or engaged in target tracking. This characteristic is desirable in a radar because it allows finding and tracking an opponent without alerting them to the radar's presence.