A Time Scale Signal Generator Based on Standard Time Pulse Signal

Abstract

The invention provides a time scale signal generator based on standard time pulse signals. The time scale signal generator comprises a crystal oscillator module, a first serial port, a GPS module, a communication and storage control module, a frequency demultiplication function blockset and a phase detection and control function blockset. The crystal oscillator module is used for generating the clock signals of the time scale signal generator, the first serial port is used for receiving time scale frequency allocation commands input by the outside, the GPS module is used for receiving the carrier signals of a connected outer GPS antenna, generating GPS pulse per second signals and outputting GPS locating and time data, the communication and storage control module is connected to the first serial port, and used for generating time scale signal frequency values according to the time scale frequency allocation commands and controlling the time scale signal frequency values to be stored and sent, the frequency demultiplication function blockset is used for carrying out frequency demultiplication on the clock signals according to the time scale frequency allocation commands to generate time scale signals, and the phase detection and control function blockset is used for detecting the phase difference of the GPS pulse per second signals and the fed-back time scale signals, generating controlling signals according to the phase difference to control the frequency demultiplication function blockset and aligning the GPS pulse per second signals and the time scale signals.

Description

technical field [0001] The invention relates to a time scale signal generator, in particular to a time scale signal generator based on a standard time pulse signal. Background technique [0002] With the continuous development of missiles and aerospace technology and the progress of modern electronic communication, more and more applications of time scale signals are used in the fields of engineering and science, and the requirements for its accuracy are also getting higher and higher. Satellite timing can achieve large-area coverage of broadcasting signals. The radio waves it provides to users are direct waves, which are far less affected by atmospheric refraction than short-wave and long-wave effects by the ionosphere, with high accuracy. Therefore, this technology has become the best way to achieve time synchronization. GPS has become the active high-precision satellite timing method with the largest number of users in the world. [0003] The basic principle of GPS timi...

AI Technical Summary

Problems solved by technology

However, the general GPS receiver can only provide 1Hz standard time scale pulse signal (1PPS), which cannot meet the demand for high precision short time scale

[0004] In the existing high-precision GPS synchronous clock implementation scheme, the output synchronous sampling pulse frequency is generally relatively single and cannot be adjusted, which cannot meet the frequency requirements of synchronous clocks in most engineering applications.

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