A method for calibrating and compensating fine code errors of coded sun sensors

A solar sensor and error calibration technology, which is applied in the directions of instruments, measuring devices, surveying and mapping, and navigation to achieve the effect of simple installation and improved calibration efficiency.

Active Publication Date: 2017-01-18
BEIJING INST OF CONTROL ENG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, a method for calibrating and compensating coded sun sensor fine code errors is proposed, which solves the sinusoidal regular change of the measurement error of the current sun sensor with the angle and the sun sensitive There is a problem of constant measurement error in the sun sensor, and the measurement accuracy of the sun sensor is improved by calibrating and compensating the small code error of the sun 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 calibrating and compensating fine code errors of coded sun sensors
  • A method for calibrating and compensating fine code errors of coded sun sensors
  • A method for calibrating and compensating fine code errors of coded sun sensors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040]The specific implementation idea of ​​the present invention is: considering that the light rays are diffracted by the optical system, and each optical component has a systematic constant value error relative to the reference mirror of the sun sensor, thereby establishing a unified mathematical model for the fine code error compensation of the sun sensor, and then The turntable, solar sensor reference mirror and solar simulator are established in the same coordinate system, an error calibration system is established, the parameters in the error compensation mathematical model are determined by the least square method, and finally the error compensation model is encapsulated in the solar sensor In the processor, the sun sensor outputs the measured angles of the first optical component and the second optical component in real time.

[0041] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompany...

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 calibrating and compensating the fine code error of an encoding type sun sensor. The method comprises the following steps: calculating optical diffraction error of the fine code of the encoding type sun sensor and building a uniform mathematical model of fine code compensation for the encoding type sun sensor; building an error calibrating system and obtaining data of calibrating points under all angles of the encoding type sun sensor; then respectively substituting the data of the calibrating points into the mathematical model to obtain a parameter value of the mathematical model, and encapsulating the mathematical model after the parameter is determined into an inner processor of the encoding type sun sensor; and outputting measuring angles after compensating the fine code error in time under any measuring angle by the encoding type sun sensor. By virtue of the method, the problem that the measurement error of the encoding type sun sensor regularly changes in a sine mode along with the angles can be solved; the constant error of the encoding type sun sensor system can be effectively improved; the encoding type sun sensor can be simply mounted; and the calibrating efficiency of the system is improved.

Description

technical field [0001] The invention relates to a method for calibrating and compensating a sun sensor, in particular to a method for calibrating and compensating a small code error of a coded sun sensor, and belongs to the field of calibrating the code error of a coded sun sensor. Background technique [0002] The sun sensor is an important measurement component of the satellite attitude control system, and it is also the earliest attitude sensor used for satellite attitude measurement. It is used to measure the incident angle of the sun relative to the sensor. [0003] The coded sun sensor uses a dedicated integrated silicon photocell as the core device, with a field of view greater than 120°×120° and a comprehensive measurement accuracy of better than 0.1° for the entire field of view. [0004] The optical assembly of the coded sun sensor is used as the angle measuring part. It is mainly composed of a piece of prism glass. Coding patterns with transparent and opaque inte...

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): G01C25/00G01C1/00
CPCG01C1/00G01C25/00
Inventor 赵媛吕政欣莫亚男贾锦忠崔坚陈然
Owner BEIJING INST OF CONTROL ENG
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