Analog-to-digital storage ring with memory ring

This paper discusses the need for fragmentary recording of the reflectogram to increase the dynamic range of the reflectometer. To ensure high accuracy of signal digitization, it is proposed to split the communication line into several fragments, and register the backscattered signal of each fragment with different gains by changing them using scale amplifiers. This solution will allow maintaining the signal amplitude at the input of the analog-to-digital converter close to the nominal value, and thereby reduce the signal conversion errors. After digitization, the signals of each fragment are written into its own circular memory register for subsequent correlation processing. In the proposed method, to obtain a complete reflectogram, it is necessary to add the autocorrelation functions of all fragments. The presented diagrams of the reflectometer operation show the effectiveness of the proposed method.