Quasistatic simulation of ultrashort pulse propagation in the spacecraft autonomous navigation system circuit with modal reservation

The issue of ensuring reliability and EMC of onboard equipment for space vehicles is considered. A new method for packaging and tracing of printed circuit boards (PCBs) with redundancy is described. The method is characterized by increased noise immunity due to modal filtration. A quasistatic analysis of the propagation of an ultrashort pulse in the real circuit of a digital signal processing unit for the autonomous navigation system of a spacecraft is performed. It is shown that the implementation of the method makes it possible to weaken the amplitude of the ultrashort pulse by more than 10 dB.