Based on multiple N5193A UXG agile signal generators and N7660B Signal Studio software, Multi-Emitter Scenario Generator Reference Solution supports electronic warfare simulation and test. Solution coherently changes frequencies and settles amplitude in 180 ns, allowing thousands of threat-emitters to be simulated with millions of pulses/sec. System can make Angle of Arrival measurements in changing signal environments for real-time radar threat-emitter sorting and direction finding.