Far-field measurement is a methodological approach within various scientific and engineering disciplines focused on characterizing the properties of a source or phenomenon by observing its effects at distances substantially exceeding its dimensions or the characteristic wavelength of emitted radiation or waves. This technique is crucial for simplifying the analysis of complex near-field interactions and understanding the overall output or far-reaching propagation characteristics under conditions where wavefronts approximate planar behavior, facilitating standardized assessment and predictive modeling.