The RTG (Radar Target Generator) is designed to generate primary radar returns. It can be placed in the field (Remote Test Target) or connected to a radar (on site target injection).
In all cases, the RTG will detect and preserve the radar pulse, apply a fixed and highly precise delay and retransmit the pulse with the appropriate power, pulse-width, frequency and Doppler shift. This is a high fidelity simulation of real targets and allows for precise scenarios for testing.