Analysis of electromagnetic scattering characteristics for tactical maneuvering of aircraft based on 6-DOF model

Focusing on the application of stealth aircraft maneuvering tactics, this study investigates the influence of maneuvering flight on electromagnetic scattering characteristics. A motion trajectory scattering (MTS) calculation method based on flight dynamics principles (FDP) and dynamic characteristic calculation (DCC) is proposed. The maneuvering trajectory model is developed using a 6-DOF model, and the changes in radar line-of-sight angle and aircraft attitude angle during maneuvering flight are derived. The rotation matrix formulas of aileron, rudder and elevator are presented. Based on these rotation matrices, a hybrid grid matrix representing the deflection states of the aircraft’s various control surfaces is established. The calculation of the dynamic stealth characteristics of the aircraft is accomplished through the dynamic RCS simulation model. Several typical maneuvering actions are selected to validate the calculation method for maneuvering aircraft. The simulation results demonstrate that this method is applicable to dynamic RCS calculation of diverse flight trajectories. The deflection of the control surfaces has a significant impact on the dynamic RCS of the aircraft, and it is closely related to the flight attitude and the relative position of the radar. In the design and tactical application of aircraft stealth, these factors must be taken into account to reduce the risk of being detected.