Artificial Lighting Interference on Free Space Photoelectric Systems

Artificial lighting is a main source of interference on free space photoelectric systems for communication applications. This work presents digital measurements and numerical analysis of the time and frequency characteristics of artificial lighting interference using Welch Power Spectral Density estimate and spectrogram with Short Time Fourier Transform. Measurements of time waveforms and spectra of incandescent lamps, tubular and compact fluorescent lamps with conventional and electronic ballasts, as well as Light Emitting Diodes are discussed and compared to other works.