Ka phased-array antenna on-orbit reliability evaluation method based on Bayesian network

A phased array antenna, Bayesian network technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as lack of test samples

Active Publication Date: 2020-05-19
CHINA AEROSPACE STANDARDIZATION INST
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the Ka phased array antenna has the characteristics of small samples, long life, high reliability, and no failure data, and lacks enough test samples, the traditional large-sample life data statistical method is used to solve the reliability modeling of the Ka phased array antenna. It is very difficult to analyze the 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
  • Ka phased-array antenna on-orbit reliability evaluation method based on Bayesian network
  • Ka phased-array antenna on-orbit reliability evaluation method based on Bayesian network
  • Ka phased-array antenna on-orbit reliability evaluation method based on Bayesian network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The first step is to collect Ka phased array antenna on-orbit telemetry data, ground reliability and life test data, ground test data, component failure rate data, machine-level failure modes, component-level failure modes, component-level failure modes and Related fault criteria. Provide data input for the establishment and calculation of the reliability evaluation model of the subsequent Ka phased array antenna.

[0045] The second step is to use the Bayesian network to establish the Ka phased array antenna on-orbit reliability evaluation model topology, the specific process is as follows figure 1 Shown:

[0046](1) The whole machine-level failure mode, component-level failure mode, and component-level failure mode of the Ka phased array antenna collected in step 1 are used as the upper-level nodes, middle-level nodes and bottom-level nodes in the topology structure;

[0047] (2) Through the analysis of the fault propagation mechanism of the Ka phased array antenna,...

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

This Ka phased-array antenna on-orbit reliability evaluation method based on the Bayesian network is different from a traditional probability statistics method based on large sample failure data, anda reliability evaluation model is built based on product failure mode and failure mechanism analysis; reliability evaluation calculation is carried out by fusing and utilizing product design data, ground test/test data, on-orbit data and other multi-source data. Therefore, the method is more suitable for evaluating the reliability of the Ka phased-array antenna with long service life, high reliability and no failure data, and can further accurately capture the on-orbit operation characteristics of the Ka phased-array antenna. In addition, the method has universality and can be popularized andapplied to reliability evaluation of other similar spacecraft single-machine products.

Description

technical field [0001] The invention relates to an on-orbit reliability evaluation method of a key load stand-alone satellite navigation system, belonging to the technical field of system reliability and safety. Background technique [0002] The Beidou satellite navigation system is an important national space infrastructure that provides all-weather, all-time, high-precision positioning, navigation and timing services for global users, and is an important guarantee for my country's national security and economic and social development. [0003] The Ka phased array antenna is the core of realizing the satellite navigation function, and its health status directly affects the service performance of the system. However, because the Ka phased array antenna has the characteristics of small samples, long life, high reliability, and no failure data, and lacks enough test samples, the traditional large-sample life data statistical method is used to solve the reliability modeling of ...

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): G06Q10/06G06K9/62
CPCG06Q10/0639G06F18/24155G06F18/251
Inventor 郑紫霞李若昕龙东腾郑恒程海龙张锐李岩角淑媛周波龚佩佩王小宁王博伟高敏王晋婧冉迎春申林
Owner CHINA AEROSPACE STANDARDIZATION INST
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