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

Chaotic synchronous realizing method based on GPS

An implementation method, a technology of frequency hopping synchronization, applied in the field of telecommunications, can solve problems such as complicated implementation, complicated synchronization process, modification of the underlying communication protocol, etc., and achieve the effect of simplifying the process

Inactive Publication Date: 2012-10-31
SHANGHAI JIAO TONG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After searching the existing technology, it is found that the Chinese patent "A Method for Realizing Frequency Hopping Synchronization by Orthogonal Frequency Division Multiplexing", patent number: 200510035709.6, this patent mentions the realization method of frequency hopping synchronization, but the hopping The frequency synchronization method has the following defects: (1) the synchronization process is relatively complicated (2) the underlying communication protocol needs to be modified, and the implementation is cumbersome

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
  • Chaotic synchronous realizing method based on GPS
  • Chaotic synchronous realizing method based on GPS
  • Chaotic synchronous realizing method based on GPS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0021] Such as figure 1 As shown, the block diagram of the chaotic frequency hopping system, in which: the sender first modulates the signal code through the carrier, and then the GPS receiver provides real-time clock information and second pulse signals to the frequency synthesizer. The frequency synthesizer changes the frequency according to the corresponding information to realize frequency hopping. The receiver uses the same frequency synthesizer to change the accepted frequency to achieve de-hopping, and then demodulates and restores the signal code. In this wa...

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 relates to a chaotic synchronous realizing method based on GPS in the technical field of wireless digital communication. The method includes the following steps: a GPS receiving unit provides a globally uniform pulse per second signal and time code for each node of network; the whole network bottom layer uses ZIGBEE wireless communication protocol, the current time information is read after each node of the network is started, and the frequency hopping period and the time offset in the period are computed. The frequency of the next hopping of each node of the network is computedaccording to the time offset and the appointed frequency hopping computing formula, thereby finishing the de-hopping process. The invention can complete frequency hopping network deployment and frequency hopping communication; GPS time is used as third party time to carry out frequency hopping synchronization, thereby eliminating multiple information alternation by traditional frequency hopping synchronous method to complete frequency hopping synchronization, and simplifying the process of frequency hopping synchronization; and the chaotic frequency hopping sequence is used so that the whole frequency hopping system is more safe and reliable.

Description

technical field [0001] The present invention relates to a method in the technical field of telecommunication, in particular to a method for implementing chaotic frequency hopping synchronization based on GPS. Background technique [0002] According to the requirements of wideband, strong anti-prediction and deciphering ability and strong anti-jamming ability, the broadband frequency hopping system adopting chaotic frequency hopping technology is a good solution. The main working principle of this frequency hopping communication system is: In the end, the input signal code pair frequency is f s ’ Carrier is modulated to obtain a bandwidth of B m debug signal. The chaotic frequency hopping sequence generated by the opposition controls the frequency synthesizer to output the eigensignals of frequency hopping in different time slots. In the receiving end, the local frequency hopping sequence controls the frequency synthesizer, so that the frequency of the output eigensignal h...

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): H04B1/7156H04W56/00
Inventor 陈佳品李振波曹斌双兵
Owner SHANGHAI JIAO TONG UNIV
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