Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock

Accurate and comprehensive methods for the assessment of radiated electromagnetic emissions in modern electric transportation systems are a necessity. The characteristics susceptibility victim signaling communication radio services, operating within outside right-of-way, require an update measurement integrating or replacing swept frequency technique with time domain approaches. Applicable standards EN 50121 (equivalent to IEC 62236) Urban Mass Transport Association (UMTA) additional specifications from project contracts. This work discusses standardized settings, representative conditions, highlighting areas where improvements possible opportune (statistical characterization results, identification distinction line resonances, narrowband broadband phenomena). In particular Electromagnetic Compatibility (EMC) new Digital Communication Systems, distribution spectral properties is discussed, e.g., by means Amplitude Probability Distribution including information. problem determination site setup uncertainty repeatability also observing on one hand lack clear indications and, other hand, non-ideality intrinsic variability conditions (e.g., rolling stock synchronization issues, arc intermittence).