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Environment/Versions PosApp v7.00 onwards SimGEN GSS9000 Answer The 1 RF, 2 Vehicle feature allows 2 vehicles to be defined with independent trajectories at the same RF output. To simulate a trajectory spoofing attack, 2 sets of GNSS signals are generated at a single output to simulate 2 different vehicle trajectories (static or dynamic). These two trajectories could be aligned originally with one set of GNSS signals then altered to simulate one trajectory gradually diverted from the ‘truth’ trajectory. The receiver can be spoofed to follow the altered signal set, diverging from the truth data according to the user-controlled parameters.