Wireless broadcast time service calibration method and device, and computer readable storage medium

Abstract

The invention discloses a wireless broadcast time service calibration method and device, and a computer readable storage medium, and the method comprises the steps: carrying out the initial error estimation compensation of a local crystal oscillator when a signal frame of a starting end is analyzed for the first time, i.e., the signal frame is synchronous with a signal of the starting end, so as to enable the crystal oscillator difference to be preliminarily evaluated and corrected; performing time delay compensation on a synchronous clock at each synchronous moment so as to reduce the influence of time delay on the synchronous clock, determining an accurate timing starting point of a local clock through a signal frame sent by a sending end so as to complete synchronous position locking, wherein the synchronous clock is used for calibrating the local clock, accumulated errors generated by time lapse are eliminated, and the accuracy of long-term timing of the local clock is ensured; andby evaluating the crystal oscillator error in real time and correcting the crystal oscillator error in real time after the synchronous position is locked, the accuracy of short-term timing of the local clock is ensured, and meanwhile, the influence of time service precision caused by environmental influence including multipath in the long-wave transmission process can be reduced.

Description

technical field [0001] The present invention relates to the field of timing technology, in particular to a wireless broadcast timing calibration method, device and computer-readable storage medium. Background technique [0002] High-precision time information plays an increasingly important role in the technological and economic development of today's society. Industries such as communications, electric power, and finance are inseparable from accurate timing systems to achieve synchronization and high-efficiency operation. With the wide application and development of time service in these fields, the performance, reliability, cost of implementation and maintenance of the time service system used to achieve precise time synchronization have gradually been paid more attention. [0003] Common timing methods include atomic clocks, navigation satellite timing, network timing, short-wave timing, and long-wave timing. The ground broadcast timing system represented by long-wave ti...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a wireless broadcast timing calibration method, aiming to solve the technical problem of poor accuracy of the existing long-wave timing method

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