System state estimation method based on improved nonlinear robust filtering algorithm

A system state, robust filtering technology, applied in the field of space navigation

Inactive Publication Date: 2013-09-11
SHANGHAI JIAO TONG UNIV
View PDF0 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a system state estimation method based on an improved nonlinear robust filtering algorithm, so that when the measurement output equation is nonlinear and the measurement noise is non-Gaussian distribution, a relatively High filtering accuracy and stable filtering output, can be applied in navigation, target tracking and fault detection and other fields

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
  • System state estimation method based on improved nonlinear robust filtering algorithm
  • System state estimation method based on improved nonlinear robust filtering algorithm
  • System state estimation method based on improved nonlinear robust filtering algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this embodiment, radar measurement is used for real-time system state estimation.

[0024] The dynamic system model is: x . 1 = - x 2 x . 2 = - e - η x 1 x 2 2 x 3 ...

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 system state estimation method based on an improved nonlinear robust filtering algorithm and relates to the technical field of space navigation. The method is based on a Huber nonlinear regression algorithm, so that high filtering accuracy and stable filtering output can be obtained under the condition that a measuring output equation is nonlinear, and measuring noises are in non-Gaussian distribution.

Description

technical field [0001] The present invention relates to a method in the technical field of space navigation, in particular to a method for navigation, target tracking, fault detection and other fields, especially an improved nonlinear robust filtering algorithm applied to the relative navigation of distributed spacecraft system state estimation method. Background technique [0002] In distributed spacecraft relative navigation applications, the most commonly used navigation algorithm is the Kalman filter. When the relative position of the spacecraft is far away, GPS is generally used for relative position measurement. However, when the relative position of the spacecraft is relatively close, for example, ultra-close formation flight or the rendezvous and docking stage of two spacecraft, the reliability of GPS can no longer meet the needs of relative navigation measurement, and it is necessary to switch to radar or laser measurement system. According to relevant literature,...

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): G06F19/00
Inventor 李伟刘美红段登平
Owner SHANGHAI JIAO TONG 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