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

Space-based spatial moving target tracking pointing satellite attitude control method and system

A satellite attitude control and moving target technology, which is applied in the direction of aerospace vehicle guidance devices, etc., can solve the problems that space moving targets are easy to escape the camera field of view, the expected tracking and pointing attitude cannot be designed, and the satellite orbital inclination angle varies greatly, etc., to achieve Avoid angle differential calculation, omit angle zero-crossing judgment, and achieve effective control

Active Publication Date: 2019-06-21
湖南航升卫星科技有限公司
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high speed of the orbiting satellite after breaking through the first cosmic speed, and the great difference in the orbital inclination of different satellites, the angular speed of the space moving object relative to the satellite can reach the order of 10° / s. The desired tracking pointing attitude of , making it easier for spatial moving targets to escape the camera field of view

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
  • Space-based spatial moving target tracking pointing satellite attitude control method and system
  • Space-based spatial moving target tracking pointing satellite attitude control method and system
  • Space-based spatial moving target tracking pointing satellite attitude control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] The space-based moving object tracking and pointing satellite attitude control method provided by the present invention will be described in detail below in conjunction with specific examples. Such as figure 1 As shown, the specific steps are as follows:

[0066] Step S1: Randomly select the initial simulation time as 0:00:00 on June 15, 2019 (UTC), satellite orbit state X=[R,V] T and space object orbital state X T =[R T ,V T ] T , and its spatial geometric relationship is as figure 2 shown. At the same time, the attitude quaternion of the initial moment of the satellite is given and angular velocity ω.

[0067] R S =[6858.79511,0.00203,0.00942] T (km)

[0068] V = [0.00000, 6.24669, 4.37698] T (km / s)

[0069] R T =[6674.11255,1541.85292,-622.64101] T (km)

[0070] V T =[1.44099,-3.58977,6.55660] T (km / s)

[0071]

[0072] ω=[0.1,0.1,0.1] T (deg / s)

[0073] Among them, R is the satellite's geocentric inertial frame position, V is the satellite'...

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 provides a space-based spatial moving target tracking pointing satellite attitude control method and a space-based spatial moving target tracking pointing satellite attitude control system. The space-based spatial moving target tracking pointing satellite attitude control method comprises the following steps: S1, acquiring the satellite orbit state, the attitude quaternion, the angular velocity and the spatial moving target orbit state at the current time; S2, enabling a spatial moving target to acquire the attitude quaternion and the three-axis spatial unit vector of a satellitebody coordinate system under an expected satellite attitude in a view field of a satellite camera; S3, acquiring a time derivative of the three-axis spatial unit vector of the satellite body coordinate system under the expected satellite attitude; S4, according to the three-axis spatial unit vector of the satellite body coordinate system under the expected satellite attitude and the time derivative of the unit vector, calculating the expected angular velocity; S5, according to the expected angular velocity under the expected satellite attitude and the attitude quaternion, calculating the control torque of a satellite and adjusting and controlling the attitude of the satellite according to the control torque. Capture for the moving target in the view field of the camera is guaranteed to the maximum extent. The space-based spatial moving target tracking pointing satellite attitude control method and the space-based spatial moving target tracking pointing satellite attitude control system are applied to the field of space-based attitude sensing.

Description

technical field [0001] The invention relates to the field of space-based situation awareness, in particular to a space-based space moving target tracking and pointing satellite attitude control method and system. Background technique [0002] Space-based space moving target tracking and pointing refers to the satellite platform based on space orbit, through its rapid attitude maneuver, so that the optical axis of the camera fixed to the star is always pointing to a space orbit moving target for a period of time to take photos or videos remote sensing of moving objects in space; moving objects in space can be any interesting space debris, other artificial satellites or small celestial bodies. Space-based space moving target imaging is an emerging space-based situational awareness technology in recent years, which has great scientific, commercial and military application value. In the process of continuous tracking of space moving targets, the attitude control of the star nee...

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): B64G1/24
Inventor 连一君项军华
Owner 湖南航升卫星科技有限公司
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