A Method for Acquiring Transmission State of Radio Frequency Stealth Data Link Based on Maximum Conditional Entropy

A launch state, radio frequency stealth technology, applied in the field of radio frequency stealth data link, can solve the problems of limited radio frequency stealth performance, weak adaptive planning ability of launch state, no uncertainty of launch state, etc.

Inactive Publication Date: 2017-01-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the above two methods have considered battlefield environmental factors and have certain environmental adaptability, they rely on fixed thresholds to work, and the adaptive planning ability of the launch state is weak, and the burst communication using the above methods does not have the maximum potential. Uncertain launch status, limited radio frequency stealth performance

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 Method for Acquiring Transmission State of Radio Frequency Stealth Data Link Based on Maximum Conditional Entropy
  • A Method for Acquiring Transmission State of Radio Frequency Stealth Data Link Based on Maximum Conditional Entropy
  • A Method for Acquiring Transmission State of Radio Frequency Stealth Data Link Based on Maximum Conditional Entropy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Combine below figure 1 , figure 2 , image 3 The structure and working process of the present invention are further described.

[0033] 1. Determine the statistical characteristics of the sample space

[0034] The maximum conditional entropy method proposed by the present invention uses prior experience data as a sample space, uses the statistical characteristics of the sample space to construct a Lagrangian function, and determines the maximum conditional entropy probability distribution model p of burst communication * (y|x), therefore, the statistical characteristics of the sample space should be determined first. Considering the requirements of the battlefield environment, the burst communication data link should meet the following constraints: the greater the threat factor σ in the target area, the lower the launch probability of the data link. The constraints that are assumed to be satisfied by the sample space are shown in Table 1 below:

[0035] Table 1 Co...

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 radio frequency stealth datalink emitting state acquiring method based on maximum conditional entropy. A prior environmental threat factor x and a prior datalink emitting state y in historic radio frequency stealth data serve as sample spaces. Firstly, the probability density function of the sample space x, the joint probability density function of the sample space x and the sample space y and the characteristic functions of the sample space x and the sample space y are respectively worked out; secondly, a maximum conditional entropy distribution function expression is worked out by building a Lagrange function; thirdly, unknown coefficients in the maximum conditional entropy distribution function expression are worked out, and a maximum conditional entropy distribution function is acquired; fourthly, environment thread factors acquired by situation awareness equipment are input into the maximum conditional entropy distribution function, and a datalink emitting state with the largest uncertainty is acquired.

Description

technical field [0001] The invention belongs to the technical field of radio frequency stealth data links, and in particular relates to a method for acquiring the transmission state of radio frequency stealth data links based on maximum conditional entropy. Background technique [0002] Radio frequency stealth technology is a new stealth technology proposed in recent years to counter passive detection systems. This technology effectively prevents the active radiation source from being intercepted, sorted, identified and positioned by passive electronic reconnaissance equipment through characteristic control. Compared with radar stealth and infrared stealth, radio frequency stealth technology is different. It does not reduce target characteristics without limit, but effectively controls target characteristics on the basis of meeting equipment function and performance requirements, and improves its low interception performance. [0003] Based on the theory of radio frequency ...

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): G06F19/00
Inventor 杨宇晓周建江汪飞陈军李海林康国华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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