STAP with medium PRF mode for non-side-looking airborne radar

Space-time adaptive processing (STAP) has been widely discussed for airborn e radar systems to improve the system performance of detecting targets. Thi s is especially for airborne early warning (AEW) radar, which should find t he long-range and small radar cross section (RCS) targets such as the steal th aircrafts and missiles. However, in existing airborne radar literature, STAP is mainly considered for clutter and jamming rejection in side-looking airborne radar (SLAR) applications. There have been fewer discussions on a irborne radar with non-side-ways looking array radar (non-SLAR). The STAP o f non-SLAR such as forward looking array radar is also very important and c an not be avoided for airborne radar to detect targets in all directions. T he STAP of the non-SLAR is studied here. A scheme has been proposed, which is processed by the way of STAP combined with multiple staggered medium pul se repetition frequencies (PRFs). We further study the selection of PRFs in order to make the scheme more available for non-SLAR radar. We analyze two typical non-SLAR cases, i.e., inclined-sideways looking array and forward looking array. We examine this scheme by comparing the performances of thre e processing systems under the criteria of range-velocity blind zone minimi zation. Computer simulation results show the multiple-PRFs STAP scheme is f easible for non-SLAR and can be applied to phased-array AEW radar systems.