Numerical simulation on the RCS of carrier-based electronic warfare aircraft

The radar cross section (RCS) character of carrier-based electronic warfare aircraft (CEWA) is studied. The pitch angle of radar waves to the body under combat section is analyzed. By using CATIA, 3D models for the CEWA of type A and type B are built. Based on the physical optics and the equivalent electromagnetic flow method, the RCSPlus software is used to numerically simulate the RCS character of CEWA under UHF-band, X-band and S-band. The detection probability of aircraft by radars is studied in the condition of electronic warfare. And the simulation results are analyzed with the mathematical statistics method. The results show that in low-altitude stealth aircraft design, reducing the RCS of the aircraft with the pitch angle between -7.30° and 14.78° means reducing the detection distance of all the radars 26 km away and 8 km below; under the X-band, the RCS of type A reduces by 40.95% compared with type B of CEWA; and in electronic warfare, the detection distance by the X-band radar of type A reduces by 63.24% compared with that in non-electronic warfare.