基于动态RCS的隐身飞机探测概率研究

动态RCS是影响战斗机突防概率的重要因素。围绕动态RCS这一关键要素,建立了空空动态RCS求解模型,得到了典型机动下战斗机的动态RCS变化规律,并分析了基于动态RCS的典型机动下的雷达探测概率。基于仿真的静态RCS数据库,耦合飞机抖动模型,研究了拉升机动、空间机动以及空空对抗下某型隐身飞机的动态RCS。通过仿真发现:战斗机的机腹、垂尾及尾喷管部位RCS较大,从而导致了较高的探测概率;对于拉升机动,保持较大的航路捷径更有利于隐蔽突防。

Research on detection probability of stealth aircraft based on dynamic RCS

Dynamic RCS is an important factor affecting the fighter penetration probability. Aiming at the key factor of dynamic RCS, an air-to-air dynamic RCS solving model is established, and the dynamic RCS variation law of a typical maneuvering fighter is obtained. The radar detection probability under typical maneuvering based on dynamic RCS is analyzed. Based on the simulation of the static RCS database, coupled with the aircraft jitter model, the dynamic RCS of a stealth aircraft with lift maneuver, space maneuver and air-to-air combat is studied. The simulation results show that the RCS at the belly, tailfin and tail nozzle of the fighter are large, which lead to a higher probability of detection. For the pull-up maneuver, maintaining a larger route shortcut is more favorable covert penetration.