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

Spectral correlation subspace direction finding method based on symmetric cycle frequencies

A technology of cyclic frequency and subspace, applied in the field of electronic information, can solve problems such as algorithm failure, and achieve the effect of high probability of correct direction finding

Inactive Publication Date: 2019-01-18
TONG FANG ELECTRONICS SCI & TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing spectral correlation subspace algorithm fails when the second-order cyclic statistics of the signal are consistent.

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
  • Spectral correlation subspace direction finding method based on symmetric cycle frequencies
  • Spectral correlation subspace direction finding method based on symmetric cycle frequencies
  • Spectral correlation subspace direction finding method based on symmetric cycle frequencies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0050] According to an embodiment of the present invention, a method for finding the direction of a spectrum-correlated subspace based on a symmetrical cyclic frequency is provided, using a uniform line array of 16 array elements, the distance between adjacent array elements is d=37.5 meters, and the straight line where the array elements are selected is On the x-axis, the first array element counted from the left is the origin to establish a reference coordinate system. Two BPSK modulated si...

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 spectral correlation subspace direction finding method based on symmetric cycle frequencies. Cyclic autocorrelation functions are established according to cyclostationarity of received signals, and by utilizing weak correlation between the cyclic autocorrelation functions of the symmetric cycle frequencies, a cyclic cross correlation matrix is constructed, so that direction finding accuracy is superior to that of an existing spectral correlation subspace direction finding method, and the spectral correlation subspace direction finding method has a higher direction finding correct probability.

Description

technical field [0001] The present invention relates to the technical field of electronic information, in particular to a method for finding direction in a spectrum-correlated subspace based on a symmetric cyclic frequency. Background technique [0002] Array signal processing technology can be used to process the signals received by the array to determine the direction of arrival (referred to as direction finding) of multiple signals. It has a wide range of applications in radar, sonar, communication systems, and smart antennas. [0003] Among the various existing direction finding methods, the interferometer direction finding method has good direction finding performance for a single signal, but the method fails when there are multiple signals at the same frequency, and its application is greatly limited. The traditional subspace direction finding method has good direction finding performance for multiple signals at the same frequency, but the degree of freedom of directio...

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): G01S3/00
CPCG01S3/00
Inventor 王长生杨民刘长明龚永龙丁学科汤四龙
Owner TONG FANG ELECTRONICS SCI & TECH
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