Carrier attitude measurement method and system

A technology of measurement system and measurement method, which is applied in navigation and ground navigation through speed/acceleration measurement, can solve problems such as attitude angle error, and achieve the effect of excellent dynamic accuracy and stability of attitude

Inactive Publication Date: 2005-09-07
TSINGHUA UNIV
View PDF1 Cites 48 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the carrier moves with acceleration or is disturbed during the movement, for example, when the aircraft is affected by the airflow during flight and has a certain acceleration, the acceleration measur...

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
  • Carrier attitude measurement method and system
  • Carrier attitude measurement method and system
  • Carrier attitude measurement method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] In an exemplary embodiment, the coordinate system is established as figure 1 shown. figure 1 (a) A geographical coordinate system composed of three orthogonal axes is established with the location of the carrier as the origin (N-E-D), where the N axis is pointing to the true north from the carrier, and the E axis is pointing to the true east from the carrier. The D axis is directed from the carrier to the center of the earth. figure 1 (b) is a three-axis orthogonal carrier coordinate system X-Y-Z fixedly connected to the carrier 100, wherein the X-axis is in the carrier symmetry plane, the center of mass of the carrier points to the forward direction of the carrier movement, and the Y-axis is perpendicular to the carrier symmetry plane and points to the right; Z The axis is in the plane of symmetry of the carrier and points d...

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 method and system of measuring carrier attitude, which comprises data processing device and sensor composed of three axis accelerometer, three axis flux meter, three axis rate gyroscope for measuring acceleration of gravity, earth magnetic flux density, the component of the carrier's angular speed on the coordinate system individually. When processing the signal, use the component of the carrier's angular speed to Kalman filtering the measured acceleration of gravity and earth magnetic flux density and get the estimated value by which resolve the carrier attitude. The invention can reduce the impact of the system causing by acceleration through stabilizing gyroscope signal and do not have the problem of integral float, the sensor using MEMS integrated chip technology.

Description

technical field [0001] The invention relates to the field of attitude measurement, and more specifically, the invention relates to an attitude measurement for aircraft and other carriers. Background technique [0002] Attitude measurement refers to the use of various sensors to measure and analyze the attitude data of aircraft and other carriers relative to the reference reference. The attitude data mentioned here usually refers to the attitude angle of the carrier, including heading angle ψ, pitch angle θ and roll angle γ. The existing attitude measurement methods mainly include the following two types: [0003] (1) The sensor is composed of a three-axis rate gyroscope. The rate gyroscope measures the angular velocity of the carrier motion, which must be integrated to obtain the attitude angle. However, there is a serious zero point drift problem in the MEMS rate gyro, so the attitude angle obtained through integral calculation will no longer be accurate. This measurement ...

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): G01C21/08G01C21/10
Inventor 周兆英朱荣王鼎渠王晓浩宋宇宁王劲东
Owner TSINGHUA 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