Timing method by means of navigation satellite, device thereof and computer-readable storage medium

Abstract

The invention discloses a timing method by means of a navigation satellite, a device thereof and a computer-readable storage medium. The timing method comprises the steps of estimating a clock error optimal value of a reference station receiver according to the observed value of each satellite of a reference station and the coordinate of the reference station; according to the pseudo range observed quantity of the reference station and the estimated optimal value of the clock error of the reference station receiver, calculating a pseudo range correction item between the reference station and acommon-view satellite of a subscriber station; correcting the pseudo range observed quantity of the subscriber station by means of a calculated pseudo range error, measuring the clock error of the user station receiver by means of the corrected pseudo range of the subscriber station; and adjusting the local clock of the user station receiver by means of the calculated clock error of the subscriber station receiver. The timing method, the device thereof and the computer-readable storage medium have advantages of calculating the clock error of the subscriber station receiver by means of the pseudo range correction item between the reference station and the common-view satellite of the user station, effectively reducing influence of an ionosphere error to timing precision of the receiver, and improving timing precision of the subscriber station.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a timing method and device using navigation satellites, and a computer-readable storage medium. Background technique [0002] With the rapid development of modern science and information technology, all walks of life, such as military, aerospace, deep space exploration, communication, transportation, electric power, finance, national defense, etc., have higher and higher requirements for time and frequency accuracy, and high-precision time references have become One of the basic guarantee platforms in the fields of communication, electric power, radio and television, security monitoring, industrial control, etc. The use of global navigation satellite system (Global Navigation Satellite System, GNSS) satellite timing is currently the most effective way for long-distance and large-scale high-precision time synchronization. [0003] At present, the timing accuracy of s...

AI Technical Summary

Problems solved by technology

[0003] At present, the timing accuracy of single-station dual-frequency receivers can reach up to 10 nanoseconds (nanosecond, ns), but the price of dual-frequency receivers is relatively high, and the cost is too high for users who need to deploy more high-precision timing equipment ;Single-frequency receiver products are relatively cheap, but the timing accuracy of single-frequency receivers is not high, which cannot meet the timing accuracy requirements of 5G communications. The main reason is that the single-frequency signal is affected by ionospheric delay errors and cannot be effectively eliminated through modeling , the residual ionospheric error will cause a delay error of about 10ns, which directly affects the timing accuracy

Images