1PPS synchronous output control method capable of ensuring continuity and uniformity

The invention relates to a 1PPS synchronous output control method capable of ensuring continuity and uniformity, which comprises the following steps: step 1, an embedded processor generates a timed interrupt task through a crystal oscillator, carries out strapdown inertial navigation period calculation and system information output control, records the frequency as N, and records the highest output frequency of user demand information as L; 2, designing a counting frequency division and synchronous output control variable m, 3, recognizing a 1PPS synchronous input signal in real time in a main task, and setting the value of m to be 0 when a synchronous signal is recognized; 4, performing two judgments about an m value when the timed task is executed in each period, and outputting information according to a result; and step 5, adding 1 to the value m after the judgment is completed, and completing the synchronous output control process. Strict synchronization of system output and 1PPS signals can be completed