Electronic Warfare (EW) System Direction Finding (DF) Interference Suppression

As the number and complexity of digitally modulated CW emitters increases on US Navy surface combatants, resolving the problem of suppressing interference to onboard receiver based systems, particularly EW Systems, becomes increasingly important. The proposed solution to this problem, while providing effective relief from the interfering signals, must also be able to be adapted to existing EW systems without degrading the performance of these systems. A novel approach to interference suppression has been developed and patented by Wide Band Systems, Inc. In this approach, the spectra of the omni directional antenna is processed and mixed with the spectra of the DF antenna spectra to provide interference cancellation in both the frequency and angle of arrival processing paths using a single set of filters. The proposed research will determine the feasibility of adapting the approach to the SLQ-32(V) system architecture and perform an analysis to predict the performance and to estimate the impact (if any) to system functionality.