Improved time-hopping pulse position keying telemetry method

A pulse position and improved technology, applied in electrical components, transmission systems, etc., can solve the problems of narrow pulse width and high time synchronization accuracy, and achieve the effects of easy engineering implementation, excellent anti-interception performance, and good practical value.

Active Publication Date: 2019-08-23
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The time-hopping pulse position keying telemetry method proposed in the above-mentioned patent needs to recover information through traditional PPK demodulation after matching filtering is completed, but the pulse width sent by the time-hopping pulse position keying method is extremely narrow, and the demodulation requires extremely high Time synchronization accuracy is a great challenge to hardware implementation

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
  • Improved time-hopping pulse position keying telemetry method
  • Improved time-hopping pulse position keying telemetry method
  • Improved time-hopping pulse position keying telemetry method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] As a preferred embodiment of the application, refer to the attached figure 2 and 4 , this example discloses:

[0041] An improved time-hopping pulse position keying telemetry method, characterized in that: the multiple access communication of the PPK telemetry system is realized by time-hopping spread spectrum technology, and the time-hopping sequence and the PPK coded signal are coupled together, that is, the time-hopping sequence and the PPK code The signal is subjected to linear or nonlinear mathematical operations to generate a new coupled signal; for the newly generated coupled signal, the receiving end directly completes the receiving and demodulating of the information through parallel matched filtering, that is, according to the number of PPK symbols that appear after coupling, set the number of The received signals are processed in parallel by one channel matched filter; when a signal corresponding to a time-hopping PPK symbol is received, it is sent to all m...

Embodiment 2

[0049] As another preferred embodiment of the present application, refer to the attached figure 2 and 4 , this example discloses:

[0050] An improved time-hopping pulse position keying telemetry method, characterized in that: the multiple access communication of the PPK telemetry system is realized by time-hopping spread spectrum technology, and the time-hopping sequence and the PPK coded signal are coupled together, that is, the time-hopping sequence and the PPK code The signal is subjected to linear or nonlinear mathematical operations to generate a new coupled signal; for the newly generated coupled signal, the receiving end directly completes the receiving and demodulating of the information through parallel matched filtering, that is, according to the number of PPK symbols that appear after coupling, set the number of The received signals are processed in parallel by one channel matched filter; when a signal corresponding to a time-hopping PPK symbol is received, it is...

Embodiment 3

[0057] like Figure 5 As shown, it is an implementation legend of a flow process, which is divided into source signal, time-hopping PPK signal, time-hopping PPK signal after adding Gaussian white noise, and four channels corresponding to symbols "1", "2", "3" and "4". Matched filter and decision output 8 parts.

[0058] Figure 5 The first part is the source signal; the second part is to modulate the source signal into a time-hopping PPK signal. In the example, Ns is set to 10; the third part is the time-hopping PPK signal after adding Gaussian white noise, and the signal-to-noise ratio is set to - 10dB; the fourth to seventh parts are respectively the correlation peaks of the matched filter output corresponding to the four time-hopping PPK symbols "1", "2", "3" and "4"; the eighth part is the result of the judgment output. In the figure, the source sends three data of "2", "3" and "4" sequentially, modulated into a time-hopping PPK signal and sent to four parallel matched f...

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 improved time-hopping pulse position keying telemetry method, and relates to the technical field of wireless measurement and control communication. The method comprises: through improving the combination method of the time-hopping sequence and the PPK coding symbol, namely, coupling the time-hopping sequence and the PPK coded signal together; performing linear or nonlinear mathematical operation on a time hopping sequence and a PPK coded signal; generating a new coupling signal, for the newly generated coupling signal, the receiving end directly receiving and demodulating the information through the parallel matching filtering method. The PPK demodulation step is not needed any more, the requirement for the time synchronization precision is reduced, and hardwareimplementation is facilitated.

Description

technical field [0001] The invention relates to the technical field of wireless measurement and control communication, in particular to an improved time-hopping pulse position keying telemetry method. Background technique [0002] The PPK (Pulse Position Keying, pulse position keying) telemetry system is digitized from the PPM (Pulse Position Modulation, pulse position modulation) system. In order to meet the needs of future telemetry development, a Chinese patent document with the publication number CN102594400A and the publication date of July 18, 2012 proposes a time-hopping pulse position keying telemetry method. This method combines the time-hopping technology with the PPK telemetry system to form a new type of telemetry system with multiple access, anti-jamming and anti-interception capabilities. [0003] The method proposed in this patent is to send each user's message to a buffer, and after receiving the message with set bits in the buffer, complete the PPK encoding...

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): H04B1/69H04B1/7163H04B1/717
CPCH04B1/69H04B1/7163H04B2001/6908
Inventor 石先华张健王鹏杜少轩刘友江
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap