Possible Application of Millisecond Pulsar to Time Metrology

The essential characteristics of the pulsar spinning and of the time scales,and the relation between them are analysed. The possible application of the millisecond pulsar to the time metrology is discussed. Based on the measurements of the arrival times of the radio pulses emitted from the millisecond pulsar(s),pulsar time and ensemble pulsar time can be established after the necessary time space transformation,correction and parameters fitting are applied to the measurements.It is possible for pulsar time,especially for ensemble pulsar time,to transfer the accuracy of atomic time from one period to another.It is also possible that pulsar time,especially ensemble pulsar time,may contribute to the knowledge of the stability of atomic time,although there is a dependence of pulsar time(and ensemble pulsar time)on atomic time. In addition, a binary pulsar time can be defined based on the orbital phase of a pulsar in a binary system.