Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

System error correction method of autonomous navigation sensor by using yaw maneuvering

A technology of autonomous navigation and system error, applied in directions such as integrated navigators, and can solve problems such as poor error observability

Active Publication Date: 2012-06-27
BEIJING INST OF CONTROL ENG
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical solution problem of the present invention is: to overcome the deficiencies in the prior art, propose a kind of method that utilizes satellite yaw maneuvering to correct the error of the autonomous navigation sensor system, solve the problem that the original navigation system has poor observability of the error of the autonomous navigation sensor system , better on-orbit calibration and compensation for navigation sensor system errors, thereby improving the accuracy of the navigation system

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 error correction method of autonomous navigation sensor by using yaw maneuvering
  • System error correction method of autonomous navigation sensor by using yaw maneuvering
  • System error correction method of autonomous navigation sensor by using yaw maneuvering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Such as figure 1 Shown, the present invention is concretely realized as follows:

[0050] (1) Define the coordinate system: the origin of the inertial system is at the center of the earth, the positive direction of the X-axis is along the intersection line between the equatorial plane and the ecliptic plane of the earth, pointing to the vernal equinox, the Z-axis is the normal line of the equatorial plane, and the positive direction points to the North Pole, and the Y-axis and The X and Z axes form a right-handed system; the origin of the orbital system is at the center of mass of the satellite, moving along the orbit with the satellite, the Z-axis points to the center of the earth, the X-axis is perpendicular to the Z-axis and points to the satellite velocity direction, and the Y-axis forms a right-handed relationship with the X and Z axes system; the satellite system is a coordinate system established based on the satellite structure, the origin is a point fixed on th...

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 error correction method of an autonomous navigation sensor by using yaw maneuvering, comprising the following steps: observing the earth by the autonomous navigation sensor to obtain the earth direction vector and geocentric distance of a satellite system, observing stars by the autonomous navigation sensor to obtain the pose transform matrix from an inertial system to the satellite system, combining the two observation results to obtain the earth direction and geocentric distance in the inertial system to determine a satellite orbit. According to the invention, the autonomous navigation sensor system error is extended to a state variable, and the deviation self-calibration is carried out by using the earth direction and geocentric distance as the measured values; the mostly studied idea of moving-base alignment in the field of the inertial navigation system is used for reference, and yaw maneuvering is used for raising the observability of the sensor system error of the navigation system, thus the estimation and compensation of the sensor system error can be well carried out. The method has simple operation, and can significantly raise the autonomous navigation precision.

Description

technical field [0001] The invention relates to an error correction method of an autonomous navigation sensor system utilizing yaw maneuvering, and belongs to the technical field of spacecraft autonomous navigation. Background technique [0002] Autonomous navigation technology means that the satellite only relies on on-orbit measurement equipment to determine the position and velocity of the satellite in real time without relying on the support of the ground system, also known as autonomous orbit determination. For satellite systems, autonomous navigation is beneficial to reduce the dependence of satellites on the ground and improve the survivability of satellite systems. Maintain, which is very important for military satellites. In addition, autonomous navigation can also effectively reduce the burden on ground measurement and control stations and reduce ground support costs, thereby reducing the development costs of the entire space program. Autonomous navigation is 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
IPC IPC(8): G01C21/24
Inventor 魏春岭张斌张青春刘良栋李果亢淼
Owner BEIJING INST OF CONTROL ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com