Bandpass of discrete tracking system with application to space radio navigation user apparatus

There is deduced a formula for equivalent noise bandpass of a discrete tracking system. For discrete tracking systems of first, second and third order there are obtained end analyzed expressions for equivalent noise bandpass as functions of time step. There is shown that for discrete tracking systems of high order with large-scale bandpass utilization of approximate formulas oriented on equivalent continuous tracking system lead to grate inaccuracy that can come up twice as much and even more.