Abstract:Maximum tracking capacity of phased-array radar is not only a key system index, but also the base of Track-And-Search(TAS) mode. In order to analyze the parameter from an engineering aspect, firstly, the relationship between revisit-time and engineering measurement error was researched, and tracking illuminating time with minimum Signal to Noise Ratio(SNR) requirement was analyzed in detail with the assumption of Singer model. Secondly, with the help of statistic analysis under multi-target environment, the statistic mean revisit-time and the statistic mean illuminating time were given to compute the maximum tracking capacity of phased array radar under saturation state. Furthermore, a formula was given to compute dynamic tracking under radar saturation state. Lastly, a simulation software was developed by VC++ and the related conclusions were validated on the simulation software.