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

Implementing method for precision measurement of high-precision spacecraft

A precision measurement and spacecraft technology, applied in the direction of measuring devices, measuring instruments, instruments, etc., can solve the problems of multiple measurement links, complex operation, complex error factors, etc., and achieve the effect of fast calculation, high measurement accuracy and simple operation

Active Publication Date: 2018-11-06
SHANGHAI SATELLITE ENG INST
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional electronic theodolite precision measurement method is greatly affected by human factors, the operation is more complicated, the measurement links are more, and the error factors are complicated. At present, the highest measurement accuracy can reach ±5″, which cannot meet the requirements of angular second-level payload attitude angle measurement.

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
  • Implementing method for precision measurement of high-precision spacecraft
  • Implementing method for precision measurement of high-precision spacecraft
  • Implementing method for precision measurement of high-precision spacecraft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The implementation of the present invention will be described in detail below, and the implementation of specific steps is carried out on the premise of the technical solution of the present invention, and the detailed implementation and specific operation process are given here.

[0022] 1. Payload local coordinate system definition

[0023] The local coordinate system of the payload is determined according to the right-hand rule, such as figure 1 shown, {X o Y o Z o} is the fixed reference frame of the spacecraft, {X si Y si Z si} is the i-th payload coordinate system (i=1, 2), using X si , Y si ,Z si The component values ​​of the three coordinate axes in the spacecraft reference system represent the relationship between the payload local coordinate system and the spacecraft reference coordinate system.

[0024] e.g. X for payload i si axis, the values ​​of the three axis directions in the spacecraft reference system are: X ix 、X iy 、X iz , with X b , Y ...

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 an implementing method for precision measurement of a high-precision spacecraft. The implementing method for the precision measurement of the high-precision spacecraft comprisesthe steps of measuring angles of two orthogonal normal vectors of an effective load reference prism by using a photoelectric autocollimator to obtain mathematical description of the unit vectors of the prism in a reference coordinate system of the spacecraft; then carrying out rotation vector algorithm to obtain a vector change relationship of the effective load reference prism; and resolving theattitude angles of effective loads in the reference coordinate system and the relative posture relationship between the effective loads. The requirements for arcsecond-level precision measurement ofthe effective loads in processes of general assembly, testing and the like of the spacecraft are met mainly, and the implementing method has the advantages of high measurement precision, high applicability and the like.

Description

technical field [0001] The invention relates to the angular-second-level precision measurement of payloads in the process of spacecraft assembly and testing, and in particular to a high-precision spacecraft precision measurement method. Background technique [0002] In order to ensure the normal operation of the payload and the realization of satellite performance indicators, it is necessary to measure, adjust and control the accuracy of the payload, the measurement execution components of the attitude control system, and other system-related stand-alone machines during ground assembly and testing. Generally, regular hexahedral prisms or polyhedral prisms are set up on the structure, and the optical axis of the prisms is used to characterize the physical characteristics of the load under test or a stand-alone machine. The measurement of installation and assembly accuracy is mainly carried out by establishing a station with electronic theodolites, which requires two or more th...

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): G01C15/00
CPCG01C15/00
Inventor 庞亚飞赵旭枫林德贵杜冬
Owner SHANGHAI SATELLITE ENG INST
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