This invention discloses a method and
system for determining the
current time using radio observations of multiple pulsars, comprising the following steps: S1. Correcting the deviation between the local
clock time and the absolute time to within a set threshold; S2. Selecting N radio pulsars, where N is greater than or equal to 4, and continuously observing the selected radio pulsars using a
radio telescope to obtain
observation data; S3.
Processing the
observation data to generate the observed pulse profile; calculating the
pulsar pulse phase φ. i S4. Calculate the standard pulse profile P k With the observed pulse profile P' k The
relative phase deviation δφ between i Calculate the
relative phase deviation δφ with error S5. i With phase φ i deviation Δφ i S6. The deviation δT between the
telescope's local
clock time and absolute time is calculated, thereby determining the absolute time. This invention eliminates the need to synchronize the local
clock with the absolute time of a certain
time standard. It can obtain absolute time with an accuracy on the order of tens of microseconds by analyzing observed pulsars, and significantly reduces calculation time.