Cognition-type blind source separation radiant source extraction method and evaluation method thereof

A blind source separation and extraction method technology, applied in the field of cognitive blind source separation radiation source extraction, can solve the problems that blind source separation cannot be directly applied

Inactive Publication Date: 2017-02-15
HOHAI UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore blind source separation cannot be directly applied to the occasion

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
  • Cognition-type blind source separation radiant source extraction method and evaluation method thereof
  • Cognition-type blind source separation radiant source extraction method and evaluation method thereof
  • Cognition-type blind source separation radiant source extraction method and evaluation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0137] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0138] The method of the present invention is verified by computer simulation. Assume that a 16-element radar array is an equidistant linear array, the array element spacing is half a wavelength, and the sampling point N S =2000, signal-to-noise ratio SNR=20dB. There are two illumination sources in the simulation space, namely illumination source 1 and illumination source 2. Illumination source 1 is a linear frequency modulation signal located at an azimuth of 14°, and the frequency modulation slope is 1×10 11 , actually as Figure 4 Shown; Illumination source 2 is a sinusoidal signal located at an azimuth of 32°, with a period of 10s, and its real part is as Figure 5 shown.

[0139] 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 present invention discloses a cognition-type blind source separation radiant source extraction method and an evaluation method thereof. The method of spectral estimation based on matrix eigenvalue decomposition is employed to obtain the estimated values of the irradiation source direction and the number, the constant false alarm detection technology is employed to determine the number of the irradiation sources, and the blind source separation method is employed to realize the separation of the blind source signals to obtain the separation signals of the irradiation source signals. The cognition-type blind source separation radiant source extraction method and the evaluation method thereof can recover relatively independent irradiation source signals in the condition of the unknown number of the irradiation source signals and have good separation precision.

Description

technical field [0001] The invention relates to a cognitive blind source separation radiation source extraction method and an evaluation method thereof, belonging to the technical field of radar. Background technique [0002] Blind Source Separation (BSS: Blind Source Separation) only uses a small amount of prior knowledge (such as non-Gaussianity, statistical independence, cyclostationarity, etc.) to separate unknown mixed signals and restore the source signal. Therefore, this method has a very wide application in the field of array signal processing. In external radiation source radar, there are often multiple radiation sources with the same frequency. When one of the radiation sources is selected as a reference signal, other radiation sources with the same frequency will become interference. When conventional methods such as beamforming are used to extract direct wave signals, the suppression of interference sources is not thorough enough. The method of blind source se...

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): G01S13/88G01S7/36
CPCG01S7/36G01S13/88
Inventor 王峰张池马正颖蒋德富陈嘉琪
Owner HOHAI UNIV
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