ON-BOARD COMPACT SYSTEM FOR FULL TIME-DOMAIN ELECTROMAGNETIC INTERFERENCE MEASUREMENTS

This paper presents a compact system for the measurement of electromagnetic interferences in the time domain. The measurement system is based on a USB oscilloscope, used as digitizer, and specific software for signal processing and spectral estimation. The measurement system is suitable for both conducted and radiated electromagnetic emissions up to 200 MHz. Its accuracy, precision and dynamic range are sufficient for the intended application. It is particularly suitable for measuring transient disturbances due to its triggering capabilities. Its relative low weight and cost makes it a valuable tool for investigating on-board the indirect effects of lightning strikes as disturbances coupled to cables and antennas inside launch vehicles, aircrafts, and unmanned aerial vehicles.