Doppler Spectrum Analysis Using A Minicomputer PDF Download

The spectral analysis of waveforms, whether these waves are acoustic or electrical in nature, has evolved into an important aspect of quite a wide variety of scientific endeavors. Utilized primarily be the Navy in the Study of underwater sound, frequency analysis also finds utility in research on mechanical vibrations, speech, music, et cetera. Real-time capability is necessary for many of these applications. That is, the transformation must be completed within the time interval over which its sampled data is acquired so that spectral plots may be generated on a continuing basis. The basis for a computer-aided frequency analysis scheme is known as a Discrete Fourier Transform, or DFT. The inherent flexibility of a general purpose computer lends itself quite well to the implementation of a high speed adaptation of the DFT, called a Fast fourier Transform or FFT. (Author).