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

Method for resisting asynchronous interference based on frequency domain

A frequency domain, step 2 technology, applied in the field of suppressing asynchronous interference, radar signal processing system, and asynchronous interference based on frequency domain, can solve problems such as improper constant false alarm threshold setting

Inactive Publication Date: 2012-10-03
WUHAN BINHU ELECTRONICS
View PDF1 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a radar anti-asynchronous interference method based on the frequency domain, which solves the problem of improper setting of the constant false alarm threshold due to the similar time-domain amplitude of the radar target echo and the interference signal in the existing radar anti-asynchronous interference method

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
  • Method for resisting asynchronous interference based on frequency domain
  • Method for resisting asynchronous interference based on frequency domain
  • Method for resisting asynchronous interference based on frequency domain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] A radar anti-jamming method based on the frequency domain, such as figure 1 shown, including the following steps:

[0027] Step 1. Perform pulse compression processing on the radar echo signal:

[0028] The radar echo signal includes two parts, one part is the target echo signal, and the second part is the interference signal, the radar echo signal is expressed as, and is the number of AD sampling points. The impulse response of the pulse compression filter is, where is the delay of the pulse compression filter and is the gain constant; do The point fast Fourier transform is used to obtain the radar echo signal in the frequency domain, and the point fast Fourier transform is performed to obtain the frequency response of the pulse compression filter. Perform inverse fast Fourier transform on the result after multiplication with the ...

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 relates to a method for resisting asynchronous interference in the field of radar signal processing, in particular to the method for resisting asynchronous interference based on frequency domain. The method is widely applicable to radar signal processing systems and is used to solve the problem of inappropriate setting of constant false alarm threshold due to approximate time domain amplitude of radar target echo and interference signals in existing method for resisting asynchronous interference of the radar. By transforming the frequency domain, time domain echo of target signals and the interference signals are transformed to the frequency domain, frequency domain amplitude of the radar target echo and the interference signals are increased, setting of the constant false alarm threshold is facilitated, and false alarm rate of the radar is lowered.

Description

technical field [0001] The invention relates to a method for suppressing asynchronous interference in the field of radar signal processing, in particular to an asynchronous interference method based on frequency domain, which can be widely used in radar signal processing systems. Background technique [0002] Radar anti-jamming refers to the general term for all tactical and technical measures that destroy and disrupt the enemy's radar to detect one's own target information. For radar, except useful signals with target information, other kinds of useless signals are interference. Modern warfare is usually a five-dimensional integration of "sea, land, air, sky, and electricity". Radar networking or radar formation operations often occur, but one of the biggest problems often faced in this way is the mutual interference between radars. The more radars there are, the The closer the distance, the more serious the interference. Often the radar has not found the target, but it is...

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): G01S7/36
Inventor 黄志华高芳芳熊文徐晓赵林兵
Owner WUHAN BINHU ELECTRONICS
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