Calculation of Received Power through Near Field RCS Modeling of Target Encounter Environment

This paper proposes a method for calculating the received power by modeling the environment in which a target and guided weapon encounter each other and analyzing the RCS and gains in the near field. The target encounter environment was modeled by fixing the position of the simple missile shape target and moving the horn antenna. The near-field RCS was analyzed based on the magnitude of the Poynting vector obtained using the HFSS SBR+ simulation. The received power was calculated by substituting the antenna gain, which varies based on the distance from the target, and the previously analyzed near-field RCS into the radar equation. The received power calculated using the proposed method is compared and verified with the received power obtained using the far-field RCS, gain, and the received power obtained through simulation.