Method of radiolocation object shield zone calculation for ground jammer stations

摘要

The article presents a short description of the methods of shielding terrestrial objects using land jammers. The necessarymathematical formulae needed to calculate the effectiveness of radar jamming to shield a single ground object for twovariants are given: when the jammer is near to the shielded object and when it is away from it at a fixed distance. For theenergy criterion, the method for calculating the sector of the ground object shield was presented, according to the parametersof the jammer, jammed airborne radar and aircraft flight altitude. The necessary mathematical relations have been given todetermine the sector of the object's shield. The angular relations and distances between the object to be covered, the jammersand the attacking aircraft change during the raid. The results of numerical calculations illustrating the presented method forthe exemplary parameters of the jammer station, the radar and the variant of the air raid are presented in the respective tablesand diagram. The implementation of an effective object electromagnetic protected zone of the facility using land-basedjammers depends mainly on the exact knowledge of the technical parameters of the jammed radars (the emitter database), thejammers, the distance between them and the attacking aircraft, the degradation coefficient used for calculations, theelectromagnetic wave propagation conditions and the used jamming method. In order to achieve high effectiveness of onboardradars jamming, the software supporting the decision making process depends on the dynamically changing battlescenarios.