The relationship between RTF and Fourier transform

The algorithms of transition from RTF transform to Fourier transform and vice versa in different representations of functions of the linear system (in the form of a rational function, impulse characteristic and frequency characteristic) are proposed in the article. Both the positive and negative features of those transformations are revelead. An example to illustrate the simplicity and accuracy of the results if the proposed algorithms of the transition are implementation is shown. The algorithms can be easily worked out PC calculation.