In this paper a new matrix-based method is proposed for identification of radar pulse train. The proposed method, which is called NASH, can be used to identify the PRI for constant, staggered, and jittered signal. Previous matrix-based methods can only identify the first type of signal, i.e. constant PRI. Complexity of computation in NASH is approximately equal to 3N.^2 which is lower than histogram-based methods. Also NASH can find missing pulses' position in the pulse train