Mechanism analysis of supersonic inlet with two suction slot layout using standard k-ω SST turbulence model with numerical calculation method.The results show that:Mach number increased due to interaction with reflected shock wave and expansion wave caused by the leading edge of the suction slot;A circulate eddy is formed in the suction slot and multiple reflected in model-1.The Mach number increases to 3.6.and then decreased in the;A subsonic region is formed in the suction slot of model-2 due to shear layer,and a strong compression wave is formed at the rear edge of the suction slot,which intersect with the reflected shock wave many times.Upper wall pressure of model-2 is larger than model-1 with the overall trend.

For the problem that the elements of early warning information and the information extracting methods of from raw radar data captured by early warning radar are uncertain,the elements that can be included in the early warning information are put forward,and the data processing method with the characteristics of the elements is given.The proposed method was tested in the missile weapon test,which have certain guiding significance to further data accumulate and the construction of the early warning system.