A high-frequency signal stimulator system comprising: at least two mutually independent data producers (130a, 130b, 130'a-130'n), each configured to produce at least one data packet , describing a high-frequency signal as a radar object to be produced, having IQ data; signal processing configured to extract contents of the data packet produced by the first of the at least two mutually independent data producers (130a, 130b, 130'a to 130'n) and contents of the data packet produced by the second of the at least two mutually independent data producers (130a, 130b, 130'a-130'n); and a signal generator configured to produce a high-frequency signal based on the extracted contents; wherein the at least one data packet comprises IQ data associated to at least two or several frequency bands and wherein the signal generator is configured to produce the high-frequency signal over the at least two or several frequency bands which are adjacent to one another or overlap one another; or wherein the at least one data packet comprises IQ data associated to at least two or several frequency bands and wherein the signal generator comprises at least two signal generator units (112a, 112b, 112'a-112'n, 112"a-112"k) for at least two of the at least two or several frequency bands which are adjacent to one another or overlap one another; wherein the at least two mutually independent data producers (130a, 130b, 130'a-130'n) are mutually independently operated computers distributed in a network, wherein the signal processing comprises a network switch via which the at least two mutually independent data producers (130a, 130b, 130'a-130'n) can be coupled to the signal processing . at least two mutually independent data producers (130a, 130b, 130'a-130'n), each configured to produce at least one data packet , describing a high-frequency signal as a radar object to be produced, having IQ data; signal processing configured to extract contents of the data packet produced by the first of the at least two mutually independent data producers (130a, 130b, 130'a to 130'n) and contents of the data packet produced by the second of the at least two mutually independent data producers (130a, 130b, 130'a-130'n); and a signal generator configured to produce a high-frequency signal based on the extracted contents; wherein the at least one data packet comprises IQ data associated to at least two or several frequency bands and wherein the signal generator is configured to produce the high-frequency signal over the at least two or several frequency bands which are adjacent to one another or overlap one another; or wherein the at least one data packet comprises IQ data associated to at least two or several frequency bands and wherein the signal generator comprises at least two signal generator units (112a, 112b, 112'a-112'n, 112"a-112"k) for at least two of the at least two or several frequency bands which are adjacent to one another or overlap one another; wherein the at least two mutually independent data producers (130a, 130b, 130'a-130'n) are mutually independently operated computers distributed in a network, wherein the signal processing comprises a network switch via which the at least two mutually independent data producers (130a, 130b, 130'a-130'n) can be coupled to the signal processing . <EOS>