Simulator of Emission from Electric Propulsion Thrusters
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Primary approaches are considered for the development of emission simulators from electric propulsion thrusters (EPTs) in the radio-frequency range, including both the use of the stored actual member functions for the processes characterizing the EPT emission in the specified frequency ranges and the processes that are formed on the basis of emission simulation models. Various approaches to emission simulation modeling from stationary plasma thrusters are discussed. A possibility to use the earlier-developed mathematical models and software packages to simulate the EPT emission is considered; these models describe the complex envelope of the emission processes from a stationary plasma thruster in the given frequency ranges. Primary principles for the development of the radio simulators of the wanted signals and interference are also discussed. The application of multichannel vector generators is substantiated in view of the growth in complexity of simulated signals and interference. In such generators, the quadrature components of the processes describing EPT emission are employed that were obtained by test or by the simulation modeling methods. As an example, the simulator for EPT emission in the radio-frequency range is studied. This simulator provides such an electromagnetic environment in the given spatial region that takes various combinations of valid signals, thermal noises, and EPT emission into consideration. Recommendations are proposed on the use of the emission simulator as a part of the ground modeling complexes for defining possible influence of EPTs on onboard spacecraft systems.
Keywordsstationary plasma thrusters electromagnetic emission simulation modeling
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