Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Triangular linear frequency modulation continuous signal parameter estimation method based on differential envelope detection

A technology of linear frequency modulation and envelope detection, applied to radio wave measurement systems, instruments, etc., can solve problems such as large amount of calculation

Inactive Publication Date: 2019-04-26
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the existing parameter estimation methods either perform multi-dimensional search in the parameter domain, or combine filter banks for analysis in the time-frequency domain, and the multi-dimensional search in the parameter domain results in a large amount of calculation

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
  • Triangular linear frequency modulation continuous signal parameter estimation method based on differential envelope detection
  • Triangular linear frequency modulation continuous signal parameter estimation method based on differential envelope detection
  • Triangular linear frequency modulation continuous signal parameter estimation method based on differential envelope detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] In view of the existing parameter estimation methods, multi-dimensional search is performed in the parameter domain, or combined with filter banks for analysis in the time-frequency domain, there is a large amount of calculations caused by multi-dimensional search in the parameter domain; it is difficult to analyze and extract characteristic parameters in the time-frequency domain. Issues affecting estimation performance. The chirp continuous signal feature extraction method proposed by the invention can be applied to symmetrical triangular chirp continuous wave signals, and can also be applied to chirp pulse signals...

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 belongs to the technical field of signal detection and estimation, and discloses a triangular linear frequency modulation continuous signal parameter estimation method based on differential envelope detection. A receiver samples an observed triangular linear frequency modulation continuous wave signal from the radar to obtain a sampling sequence; the receiver carries out differentialoperation, Hilbert transform and low-pass filtering on the sampling sequence to obtain a denoising envelope sequence; the receiver calculates according to the denoising envelope sequence to obtain signal characteristic parameters including a positive modulation frequency, a negative modulation frequency, a frequency modulation signal period, a minimum frequency in a sweep frequency interval and amaximum frequency in the sweep frequency interval. The triangular linear frequency modulation continuous signal parameter estimation method based on differential envelope detection has the advantagesof characteristic extraction and calculation in the time domain and lower time complexity, and can be used for solving the parameter estimation problem of the triangular linear frequency modulation continuous signal; the characteristic parameters of the triangular linear frequency modulation continuous signal can be obtained by utilizing the sequence difference and the envelope detection, and a parameter estimation value is calculated according to the envelope slope and the change time of the envelope slope.

Description

technical field [0001] The invention belongs to the technical field of signal detection and estimation, in particular to a method for estimating parameters of triangular linear frequency modulation continuous signals based on differential envelope detection. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: continuous wave radar is an important development direction of modern radar, and has the characteristics of low intercept probability compared with pulse radar. For electronic reconnaissance, how to effectively intercept the enemy's continuous wave radar signal and then extract the signal parameters is a problem worth studying. In continuous wave radar, linear frequency modulation continuous wave (Linear Frequency Modulation Continuous Wave, LFMCW) signal is the most widely used, research on how to effectively detect this kind of signal and identify its characteristic parameters has important theoretical rese...

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
IPC IPC(8): G01S7/285
CPCG01S7/285
Inventor 丁汉清陈柯宇徐晋李钊张喆刘伟华陈雪艳
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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
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