GNSS time service receiver and a time service implementing method thereof

Abstract

The invention discloses a GNSS time service receiver and a time service implementing method thereof. The time service receiver comprises an antenna array, a multi-channel radio-frequency signal processing module, a control chip and a clock source module. The antenna array is used for receiving a radio frequency signal; the multi-channel radio-frequency signal processing module is used for carryingout down-conversion and analog-to-digital conversion on the received radio-frequency signal; the control chip is used for completing space-time adaptive anti-interference processing, baseband signalprocessing, time and position information extraction, and clock taming and holding of the radio-frequency signal by reading an algorithm program to obtain an accurate and stable timing result. According to the invention, the GNSS time service receiver has advantages of good anti-interference performance, high timing precision and high integration in a complex environment; and the high time serviceprecision and reliability of the GNSS time service receiver in a complex environment, especially in a complex electromagnetic environment can be guaranteed.

Description

technical field [0001] The invention relates to a time service receiver and a satellite time service method, in particular to a GNSS (Global Navigation Satellite System) based time service receiver and a time service method. Background technique [0002] High-precision time frequency has become an indispensable condition for the development of modern high technology. Precision time frequency plays a fundamental role in national economy and national defense construction, and has become an important strategic parameter and resource of the country. With the development of science and technology, the application range of high-precision time and frequency is becoming more and more extensive, from basic electric power, telecommunications, financial securities, to various engineering technologies, and then to modern space high-tech fields (such as satellite navigation, space station , manned spaceflight, deep space exploration, deep space communication, etc.) and other aspects. Es...

AI Technical Summary

Problems solved by technology

However, for users who require timing accuracy on the order of nanoseconds, there is currently no corresponding timing system that can satisfy them. These users can only use high-precision time comparison systems such as common viewing and satellite two-way time-frequency transmission.

These high precision time transfer systems are costly and have limited user capacity

GNSS is the abbreviation of Global Navigation Satellite System, that is, the global navigation satellite system. At present, GNSS-based satellite timing technology is the mainstream timing technology, such as GNSS one-way timing, Beidou RNSS timing, Beidou RDSS timing, etc. Due to the weak strength of satellite navigation signals reaching the ground and susceptible to interference

With the increasingly complex electromagnetic environment, especially the increasing intensity of military confrontation, the potential safety hazards of satellite timing applications have become a real threat, and interference poses a serious threat to the accuracy, availability, continuity and integrity of satellite timing

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