The R&S®SMW200A is a single or dual channel RF vector signal generator that can turned into a reliable, full-featured GNSS signal source. It has advanced simulation capabilities for configuring realistic and complex yet repeatable GNSS scenarios that can be run under controlled conditions. This includes realistic modelling of GNSS orbits, signal propagation effects and system errors as well as realistic modelling of the user environment. The R&S®SMW200A supports multi-constellation and multi-frequency GNSS scenarios with up to 144 channels. Using the optional additional channels R&S®SMW200A can simulate jamming and spoofing attacks, multiple vehicle scenarios or test multiple antenna receivers.