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

Measuring device and measuring method for electromagnetic wave frequency attenuation with propagation distance

A technology of frequency attenuation and propagation distance, applied in the field of electromagnetic wave frequency attenuation measurement, it can solve the problems of difficult electromagnetic wave frequency attenuation and slow electromagnetic wave frequency, and achieve the effect of simple structure, high-precision measurement, and weak attenuation measurement.

Inactive Publication Date: 2019-01-29
SHANDONG NORMAL UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the very slow attenuation of electromagnetic wave frequency with the propagation distance, it is difficult to complete the measurement of electromagnetic wave frequency attenuation with current 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
  • Measuring device and measuring method for electromagnetic wave frequency attenuation with propagation distance
  • Measuring device and measuring method for electromagnetic wave frequency attenuation with propagation distance
  • Measuring device and measuring method for electromagnetic wave frequency attenuation with propagation distance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0041] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combi...

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 measuring device and a measuring method for electromagnetic wave frequency attenuation with a propagation distance. The device comprises an electromagnetic wave signal generating device, a multi-level electromagnetic wave transmission channel and a signal processing device; the electromagnetic wave signal generating device generates a single-frequency electromagnetic wavesignal source; the single-frequency electromagnetic wave signal source is amplified, one channel is transmitted to the multi-level electromagnetic wave transmission channel, and the other channel istransmitted to a signal processing device; the multi-level electromagnetic wave transmission channel transmits the input electromagnetic wave signal in multiple levels and outputs the electromagneticwave signal to the signal processing device; the signal processing device draws a dynamic Lissajous figure according to the received two electromagnetic signals, measures a phase angle accumulated value of the electromagnetic wave signal frequency according to the number of flips and a position shape of the Lissajous figure, calculates the attenuation of the frequency of the electromagnetic wave signal according to the phase angle accumulated value, and converts the relative change amount of the electromagnetic wave signal frequency attenuation into the relative change amount of the electromagnetic wave wavelength on the basis of to a red shift relationship.

Description

technical field [0001] The present disclosure relates to the field of measurement of electromagnetic wave frequency attenuation, in particular to a measuring device and method for measuring electromagnetic wave frequency attenuation with propagation distance. Background technique [0002] After nearly a hundred years of development, the theory and technology of electromagnetic wave emission, propagation, and reception, especially in the information age, are still hot research issues in the fields of electronic countermeasures, wireless communications, satellite communications, and detection. [0003] At present, radar uses electromagnetic waves to transmit, propagate, reflect and receive obstacles, and calculate the distance of obstacles based on the time it takes. This ranging method is basically independent of the frequency of electromagnetic waves, which attenuates very slowly with the propagation distance. In view of the very slow attenuation of electromagnetic wave fre...

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): G01R23/12
CPCG01R23/12
Inventor 陈寿元陈宇
Owner SHANDONG NORMAL 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