A target detection method and system in the presence of interference in a compound Gaussian environment

A compound Gaussian and target detection technology, applied in the field of signal detection, to achieve the effect of reducing the number of training samples, reducing requirements, and simplifying the process

Active Publication Date: 2021-09-24
AIR FORCE EARLY WARNING ACADEMY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above defects or improvement needs of the prior art, the present invention provides a target detection method and system in the presence of interference in a compound Gaussian environment. detection problem

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
  • A target detection method and system in the presence of interference in a compound Gaussian environment
  • A target detection method and system in the presence of interference in a compound Gaussian environment
  • A target detection method and system in the presence of interference in a compound Gaussian environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0099] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0100] Assume that the number of radar system channels is , the data to be detected is available dimension vector Indicates that the corresponding binary hypothesis test can be written as

[0101] (1)

[0102] Among them, in hypothesis testing Next, the data to be tested Contains interference and clutter ,exist under the condition include signal ,interference and clutte...

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 target detection method and system when there is interference in a compound Gaussian environment. First construct signal matrix, interference matrix, data vector to be detected and training sample vector set; then transform the data vector to be detected and training sample vector into a matrix; then use the training sample matrix to estimate the covariance matrix; then use the signal matrix, interference matrix , the transformed data matrix to be detected and the covariance matrix are estimated, and the detection statistics are constructed; finally, the detection threshold is determined according to the false alarm probability and detection statistics set by the system, and the size of the detection statistics and the detection threshold is compared to make a A verdict on whether or not the target exists. The detector designed in the present invention is based on the idea of ​​self-adaptive detection, integratedly realizes clutter suppression, interference suppression, signal accumulation and constant false alarm processing, and by using the central conjugate symmetry characteristic of the covariance matrix, the required number of training samples dropped by half.

Description

technical field [0001] The invention belongs to the technical field of signal detection, and more specifically relates to a target detection method and system when there is interference in a compound Gaussian environment. Background technique [0002] The electromagnetic environment in which radar works is complex and changeable. On the one hand, the radar is faced with interference released by the enemy, which can greatly weaken the combat effectiveness of the radar, and even make the radar completely invalid; on the other hand, in addition to possible target signals and interference, the radar received data often also contains , High-intensity clutter reflected by ground objects. In order to ensure the normal performance of combat effectiveness, the radar needs to solve the target detection problem in the clutter and interference environment. [0003] If the interference mode changes slowly, the radar can obtain the necessary information of interference by increasing the...

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 Patents(China)
IPC IPC(8): G01S7/41G06F17/16
CPCG01S7/414G06F17/16
Inventor 刘维建杨海峰杜庆磊陈辉陈风波王永良
Owner AIR FORCE EARLY WARNING ACADEMY
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