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

Anti-interference DS-GMSK receiving method and device suitable for satellite communication

A DS-GMSK, satellite communication technology, applied in the field of satellite communication to achieve the effects of improving spectrum utilization, reducing out-of-band radiation, and improving computing efficiency

Active Publication Date: 2020-08-07
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the anti-jamming DS-GMSK receiving method and device suitable for satellite communication disclosed by the present invention is: combining DSSS and GMSK can enhance the anti-noise and anti-jamming capabilities while improving spectrum utilization, Reducing out-of-band radiation has broad application prospects in the field of satellite communications

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
  • Anti-interference DS-GMSK receiving method and device suitable for satellite communication
  • Anti-interference DS-GMSK receiving method and device suitable for satellite communication
  • Anti-interference DS-GMSK receiving method and device suitable for satellite communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the present embodiment discloses an anti-interference DS-GMSK receiving device suitable for satellite communications, including a down-conversion module, a frequency offset compensation module, a code phase tracking adjustment module, a capture and despreading demodulation switching module, and a capture module And despread demodulation module.

[0033] The down-conversion module is used to perform quadrature down-mixing of the received intermediate frequency DS-GMSK signal, and output two IQ DS-GMSK baseband signals.

[0034] The frequency offset compensation module generates a compensation carrier through DDS according to the frequency offset value output by the capture module, and performs frequency offset compensation on the DS-GMSK baseband signal after downmixing.

[0035] The code and code phase tracking adjustment module adjusts the data start position of the input capture module or the despreading demodulation module according to the code ph...

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 an anti-interference DS-GMSK receiving method and an anti-interference DS-GMSK receiving device suitable for satellite communication, and belongs to the technical field of satellite communication. The DS-GMSK has the advantages of a direct sequence spread spectrum system, works in a low signal-to-noise ratio environment, and is high in anti-interference capability; and meanwhile, the characteristics of high GMSK modulation spectrum utilization rate and low out-of-band radiation power are combined, so that the spectrum utilization rate is improved and the out-of-band radiation is reduced while the anti-noise and anti-interference capabilities are enhanced. By using FFT and IFFT operations, the operation efficiency of a capture and demodulation algorithm is significantly improved, and the anti-interference DS-GMSK receiving method suitable for satellite communication is more applicable to implementation of an FPGA platform. The anti-interference DS-GMSK receivingdevice comprises a down-conversion module, a frequency offset compensation module, a code phase tracking adjustment module, a capture module and a dispreading demodulation module. According to the anti-interference DS-GMSK receiving method and the anti-interference DS-GMSK receiving device, the DSSS and the GMSK are combined, the anti-noise and anti-interference capabilities are enhanced, the spectrum utilization rate is improved, the out-of-band radiation is reduced, and the method and the device have a wide application prospect in the field of satellite communication.

Description

Technical field [0001] The invention relates to an anti-interference DS-GMSK (Direct Sequence Spread Spectrum Gaussian Minimum Frequency Shift Keying) receiving method and device suitable for satellite communication, and belongs to the technical field of satellite communication. Background technique [0002] In this era of informationization and globalization, satellite communication is an important and indispensable means of communication. Compared with general civilian communication methods, satellite communication often needs to work in a communication environment with low signal-to-noise ratio and strong interference, and it also has high requirements for confidentiality and anti-interception. [0003] In satellite communications, modulation methods such as BPSK are often used. However, due to the sudden change of carrier phase between symbols in BPSK, the frequency spectrum is broadened, and the power spectrum will produce strong sidelobe components, and the spectrum utilizati...

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): H04L27/14H04L27/16H04B1/7087H04B1/7075
CPCH04B1/7075H04B1/7087H04L27/14H04L27/16
Inventor 安建平卢琨宋哲王帅方金辉岳平越闫伟豪张昊星
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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