Study on search performance of long range early-warning phased array radar

Search ability of long range early-warning phased array radar without indication information is studied in this paper, based on the background of near space hypersonic targets defense. Design principle and validation method of radar search parameters such as search screen, signal cycle and search frame period are deeply discussed in the case of near space work pattern, the shortest cross-screen distance and the minimum number of scans of radar are formulated based on the target motion state. Finally, radar detecting ability is analyzed through simulation, which shows that radar has the whole capacity to capture the target when it coming right against the face, while it should take the mode of TWS when it coming from behind the head space.