Reveal the Secrets of Fourier Transform
LI Ze-guang · Journal of Dalian University · 2009
Fourier Transform is widely used in Electric power,Communication,Radar,Sonar and control etc.What's about Fourier Transform and its meaning? The Secrets of Fourier Transform are revealed from signal and system.Circuit active power calculation is given.The circuit excitation signal is sine signal that signal frequency is known.