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

A method for increasing the output frequency of star sensor based on gyroscope assistance

A technology of star sensor and output frequency is applied in the field of increasing the output frequency of star sensor based on the aid of gyroscope, which can solve the problem of low data update frequency and achieve the effect of increasing the update frequency

Active Publication Date: 2022-02-11
SOUTHEAST UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the star sensor has the problem of low data update frequency, and the data update rate is an important indicator of the star sensor

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 increasing the output frequency of star sensor based on gyroscope assistance
  • A method for increasing the output frequency of star sensor based on gyroscope assistance
  • A method for increasing the output frequency of star sensor based on gyroscope assistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 , the invention discloses a method for improving the output frequency of a star sensor based on gyroscope assistance, comprising the following steps:

[0026] (1) The star sensor outputs the star map of the current frame (time t), and extracts the position of the star point in the star map of the current frame.

[0027] (2) According to the angular velocity information output by the gyroscope, predict the position of the star point in the star map of the current frame at time t+Δt, assuming that the 3×3-dimensional attitude matrix of the star sensor in the celestial coordinate system is A, and the navigation star S i The direction vector in the celestial coordinate system is v i , the direction vector can be measured by the star sensor, and its corresponding image vector in the star sensor coordinate system can be expressed as w i . The position of the center point of the star sensor in the star map plane is expressed as (x 0 ,y 0 ), Navstar S i ...

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 for increasing the output frequency of a star sensor based on gyroscope assistance. The method comprises the following steps: (1) the star sensor outputs a current frame star map, and extracts star points in the current frame star map position; (2) predict the position of the star point in the next moment star map according to the angular velocity information output by the gyroscope in the current frame star map; (3) calculate the attitude information of the carrier where it is located by the star sensor and output. The invention predicts the position of the star point in the star map through the angular velocity information output by the gyroscope, and improves the data update frequency of the star sensor.

Description

technical field [0001] The invention relates to a method for increasing the output frequency of a star sensor, in particular to a method for increasing the output frequency of a star sensor based on gyroscope assistance. Background technique [0002] In recent years, with the rapid development of navigation technology, the requirements for positioning accuracy are getting higher and higher, so the research on attitude measurement sensors that ensure high attitude accuracy and stability of the carrier is becoming more and more urgent. The star sensor is an important measurement component in the attitude control system of the carrier, and it is also an optical attitude sensor widely used at present; it uses stars in space as a reference source for attitude measurement, and outputs the direction of the optical axis of the sensor in the inertial reference system. The attitude determination accuracy of the star sensor is high, and it can provide inertial attitude information at t...

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): G01C21/02
CPCG01C21/025
Inventor 陈熙源柳笛邵鑫方琳
Owner SOUTHEAST UNIV
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