Implementation of an intersystem interference model in ELSA software demonstrator

Because of the increased use of civilian electronics in military applications during the last decade, the risk of intersystem interference is also increasing. This is due to the fact that civilian electronics produce a higher level of interference when compared to military electronics. A software demonstrator tool, ELSA, has been developed at FOI to simulate and graphically illustrate the amplification characteristics of receiver in different directions depending on the deployment of own systems and hostile jammers. FOI is currently interested in studying the effects of the interference on the antenna beam pattern. For this purpose, an intersystem interference module has been implemented in ELSA. The work included three main parts. The first was to make the function that calculated the power that receiver detected from COTS. The second was to enable entry of parameters in the intersystem interference module window, and the last was to implement the graphic to illustrate the effect that COTS has on the antenna beam pattern. The results from four different simulated scenarios shows that an intersystem interference has effect on the antenna beam pattern.