Modeling Jamming against Cruise Missile Considering Flat Earth Effect and jammer altitude in Electronic Warfare

Guided flying objects use various positioning systems such as GPS for airborne navigation. Unlike inertial navigation systems, GPS is a satellite-based radio navigation system that can be intentionally jammed in electronic warfare (EW). Electromagnetic interference saturates the airborne GPS receiver so that the inherent error correction cannot be performed. In the case of guided weapons, such as cruise missiles, EW increases the navigation error, which can lead to inaccurate targeting in the final impact phase. None of previous studies on GPS jamming have mathematically modeled the effect of earth on electromagnetic waves during EW operations. The main purpose of this paper is to investigate the effect of earth flat surface on the jammer performance in EW. Accordingly, a computer software is implemented to calculate the power received by the GPS antenna using the initial input parameters of the missile flight profile. Moreover, this software mathematically models the effects of the earth and the jammer altitude on the radiation of the jammer antenna.