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

A camouflaged covert communication structure and method based on cricket calls

A cricket and communication frame technology, which is applied in the structural field of sound wave camouflage and covert communication, can solve the problems of insufficient concealment and limited communication distance, and achieve the effect of small attenuation and strong communication concealment

Active Publication Date: 2021-07-27
TIANJIN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the limited communication distance and insufficient concealment of the existing acoustic covert communication technology

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
  • A camouflaged covert communication structure and method based on cricket calls
  • A camouflaged covert communication structure and method based on cricket calls
  • A camouflaged covert communication structure and method based on cricket calls

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention overcomes the aforesaid deficiencies of the prior art, and mainly solves the technical problems as follows: (1) overcomes the use of ultrasonic wave as the communication carrier in the existing covert communication technology, the frequency of the carrier signal is relatively high, the transmission distance is limited, and special high frequency is required Broadband speakers and high frequency bandwidth microphones have the disadvantages of system hardware design difficulty and high design cost. (2) Overcome the disadvantages of using artificial signals as communication carriers in existing covert communications, which are easily detected by acoustic wave detection devices, reveal communication intentions, and have insufficient concealment. The invention proposes a method of using the cricket's call as a communication carrier, encoding the communication information into the cricket's call through a specific coding method, and superimposing other an...

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 camouflaged and concealed communication structure and method based on cricket calls; the structure includes a communication frame, which is the smallest unit carrying information in a communication signal, and is characterized in that one communication frame includes a synchronization code (SC) and k information codes (IC), in a communication frame, the synchronization code is used as the frame header, followed by k information codes, and the time interval between each pulse is τ 1 ,…,τ K Indicates n bit digital information, and encodes the communication information; the encoding principle is: when τ k Satisfy m·T R <τ k <(m+1)T R , where m is less than 2 n positive integer, T R is the minimum unit time, then τ k The digital information represented is an n-bit binary number equal to m in value; two short pulses without time interval are used as the synchronization code, and a single short pulse is used as the information code, which can distinguish the synchronization code and the information code without Introduce other signals to ensure the concealment of communication; the time interval between the other two communication frames τ p Not used to encode communication information, the time interval is set to T R .

Description

technical field [0001] The invention belongs to the field of wireless device communication, especially a wireless communication method in a scene where radio communication is shielded or a scene requiring extremely high concealment for communication. It is a method for encoding communication information into crickets' calls , the structure and method of carrying out sound wave camouflage covert communication. Background technique [0002] Acoustic camouflage covert communication technology is an information covert transmission technology based on acoustic channels, that is, using sound waves as the carrier for data transmission, which has good concealment. Sound waves belong to mechanical waves and radio waves that belong to electromagnetic waves have different characteristics. Compared with radio communication, sound wave communication has the characteristics of simple equipment and difficult to be shielded. Especially in the case of the existing mature electromagnetic wav...

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): H04B1/7183H04B1/719H04B11/00H04L1/00
CPCH04B1/7183H04B1/719H04B11/00H04L1/0007
Inventor 蒋佳佳徐俊宇王宪全李春月孙中波
Owner TIANJIN 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