Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Beidou local precision time transfer method based on time laboratory enhanced information

A technology that enhances information and precise time. It is applied in satellite radio beacon positioning system, advanced technology, climate sustainability, etc. It can solve problems such as complicated operation and implementation, and cannot meet the needs of concurrent use. The method is simple, reliable, convenient and real-time Effects of Applying, Raising Correction Levels

Active Publication Date: 2022-07-12
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The carrier phase precise point positioning (PPP) time transfer method in satellite time transfer has become the current mainstream technology because of its high precision, and has been widely used in many time laboratories; however, the current PPP time transfer method has three limitations: First, many errors in non-difference observations are difficult to deal with efficiently, and the accuracy of time transfer can be further improved; second, conventional PPP time transfer is implemented point-to-point, which cannot meet the concurrent use needs of a large number of users; third, conventional PPP requires professional technology Only personnel and software can achieve high-precision time transfer, and the operation is complicated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Beidou local precision time transfer method based on time laboratory enhanced information
  • Beidou local precision time transfer method based on time laboratory enhanced information
  • Beidou local precision time transfer method based on time laboratory enhanced information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0034] The Beidou local precision time transfer method based on the enhanced information of the time laboratory mainly includes two core technologies:

[0035] 1) Enhanced information extraction on the Beidou base station of the Time Lab, and the following observation models are used for the extraction of enhanced information:

[0036]

[0037] Among them, P and Φ represent the pseudorange and phase, L is the combined observation value without ionosphere, R is the reference station mark, Cor represents the enhancement information, ρ is the station-star geometric distance, model is the sum of the modeling errors, including relativity, tide, Antenna phase center, troposphere, and Earth rotation errors.

[0038] 2) The time transfer solution based on the enhanced information ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a Beidou local precision time transmission method based on enhanced information of a time laboratory. The observation value of the Beidou satellite is extracted, and the enhanced information of the Beidou satellite containing the standard time signal is extracted, and broadcasted through the network. The time user receives the enhanced information, and combines the collected observation data and the received ephemeris products to perform non-difference PPP solution to obtain The time difference with the standard clock, so as to realize the precise time transfer of the national standard time. The method of the invention can eliminate or weaken the common error, improve the correction level of the observation value error, improve the time transfer precision, and can improve the correction level of the observation value error of the user station.

Description

technical field [0001] The invention relates to the technical field of precise timing, time synchronization and time-frequency transmission, in particular to a Beidou local precision time transmission method based on time laboratory enhancement information. Background technique [0002] Time transfer is an important means to achieve high-precision time synchronization between time users. It has a wide range of applications in power networking, 5G communications, financial securities and other industries. The time transfer method based on satellite technology is low cost, good continuity, and easy to implement. become one of the important means. [0003] The carrier-phase precision single point positioning (PPP) time transfer method in satellite time transfer has become the current mainstream technology due to its high accuracy, and has been widely used in many time laboratories; however, the current PPP time transfer method has three limitations: First, many errors in non-d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/03G01S19/25
CPCG01S19/03G01S19/256Y02D30/70
Inventor 涂锐卢晓春张鹏飞张睿韩军强范丽红鲁洋为
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com