Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Data processing method for Beidou and GPS common frequency point real-time signal receiving and processing system

A real-time signal and processing system technology, used in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve different pseudo-random codes and data encoding methods, cold start time in tens of seconds, hot start About 1 second, the processing time of automatic positioning is large, and it cannot be used as a real-time application, which can improve the processing speed and efficiency and reduce the amount of calculation.

Inactive Publication Date: 2016-03-09
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Beidou II uses the same carrier frequency and modulation method as GPS, but uses a different pseudo-random code and data encoding method, GPS receivers cannot process Beidou II signals
And a small number of receivers that can process Beidou 2nd generation signals are only post-processed by general-purpose GPS receivers, but they still cannot be used as real-time applications.
Generally, the cold start time of the GPS hardware receiver is tens of seconds, the hot start is about 1 second, and the processing time of automatic positioning is more than 10 seconds

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
  • Data processing method for Beidou and GPS common frequency point real-time signal receiving and processing system
  • Data processing method for Beidou and GPS common frequency point real-time signal receiving and processing system
  • Data processing method for Beidou and GPS common frequency point real-time signal receiving and processing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples. The present invention includes two parts, a hardware technical solution and a software technical solution.

[0047] hardware technology solutions such as figure 1 As shown, the real-time signals of Beidou II and GPS public frequency points enter the radio frequency front-end (RF) module through the same antenna, undergo a series of amplification, filtering and down-conversion processing, and convert them into 2-bit intermediate frequency digital signals through A / D. Under the control of the FPGA, the intermediate frequency digital signal is collected into the internal FIFO of the FPGA and stored in a certain length of data blocks in a ping-pong manner. Finally, through the USB bus controller, it is transferred to the computer in blocks. The hardware solution mainly includes the following parts:

[0048] like figure 2 As shown, a Max2741 ...

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 data processing method for a Beidou and GPS common frequency point real-time signal receiving and processing system. Beidou second generation and GPS common frequency point signals are transmitted into three RF (radio frequency) front-end modules through the same antenna, through a series of amplification, filtering and down-conversion, the signals are converted into 2-bit medium-frequency digital signals in an A / D mode, the medium-frequency digital signals are acquired into an internal storage of an FPGA under the control of the FPGA and stored as data blocks of certain length in a ping-pong mode, and finally, the data blocks are transmitted to a computer through a USB controller. The method has the advantages that the technical purposes that the Beidou second generation and the GPS common frequency point signals are captured rapidly on a software framework of a computer platform and the data are processed in real time are achieved, and the locating accuracy, reliability, integrity and usability of a single locating system are remarkably improved; and based on software development of the software radio technology, an algorithm of a traditional hardware receiver is eliminated, and a reconfiguration research mode is achieved.

Description

Technical field: [0001] The invention relates to a signal receiving and processing system for navigation and positioning, in particular to a data processing method for the real-time signal receiving and processing system of Beidou II and GPS public frequency points. Background technique: [0002] The "2006 China Aerospace White Paper" announced that five major aerospace projects will be launched in the next five years, and the deployment of the second-generation "Beidou" satellite navigation system with military applications will be completed within four years. Some experts said that after the deployment of the second-generation "Beidou" satellite system is completed, China will be able to launch precise attacks on small targets, and some media in the United States believe that China is using the Beidou project to suppress the military advantage of American satellites. With the improvement of my country's comprehensive national strength and the comprehensive penetration of t...

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 Applications(China)
IPC IPC(8): G01S19/36
CPCG01S19/36
Inventor 张雷邓江平
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products