ECM J/S ratio (SOJ)

For ECM, this app is to calculate the J/S ratio for the stand-off jammer situation. In this case, the jammer is at a different location than the target. While the target is in the main beam of the radar antenna, the jammer radiates power into the sidelobes. As an example, for a tracking radar, enter the power in kW antenna gain in dB, and IF bandwidth in MHz.