Simulation system of high accuracy star images based on star sensor

LU Yan; GAO Kun; ZHUANG You-wen; LIU Hong-miao; XU Ting-fa

doi:10.3788/OPE.20152313.0731

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Simulation system of high accuracy star images based on star sensor

更新时间：2020-08-13

- Simulation system of high accuracy star images based on star sensor
- Optics and Precision Engineering Vol. 23, Issue 10z, Pages: 730-737(2015)
- 作者机构：
  
  1. 北京理工大学光电学院北京,100081
  2. 北京理工大学光电成像技术与系统教育部重点实验室北京,100081
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152313.0731
  CLC： V448.222
- Received：02 June 2015，
  
  Revised：30 June 2015，
  
  Published：14 November 2015
- 稿件说明：
移动端阅览
卢岩, 高昆, 庄幽文等. 基于星敏感器的高精度星图模拟系统[J]. 光学精密工程, 2015,23(10z): 730-737

LU Yan, GAO Kun, ZHUANG You-wen etc. Simulation system of high accuracy star images based on star sensor[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 730-737
卢岩, 高昆, 庄幽文等. 基于星敏感器的高精度星图模拟系统[J]. 光学精密工程, 2015,23(10z): 730-737 DOI： 10.3788/OPE.20152313.0731.

LU Yan, GAO Kun, ZHUANG You-wen etc. Simulation system of high accuracy star images based on star sensor[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 730-737 DOI： 10.3788/OPE.20152313.0731.

摘要

设计了对星敏感器进行地面性能测试的星图模拟系统。根据技术指标

讨论了星图模拟的基本原理并确定了系统总体方案。建立了星图模拟方法流程

阐述了辅助视场标定、星等与亮度转换、坐标转换以及星图显示的基本原理和实现方法。针对传统的星等与亮度转换存在的问题

提出了线性亮度矫正和基于量测数据的非线性亮度矫正方法;针对光学系统畸变引起的星点位置偏差

建立了相应的模型

提出了光学畸变矫正方法。最后进行了静态与动态星图模拟

并设计了缩略图和外接显示器实现了同步双屏显示。采用FK5星表进行了实验仿真

结果表明

提出的系统能够准确模拟10.5°×7.5°视场内-4.6~6等星

星点位置畸变误差保持在0.017%以内。

Abstract

A star image simulation system was designed to test the performance of a star sensor on the ground for satisfying the requirement of accuracy and reliability of the start simulation. According to technical index

the fundamentals of star simulation were discussed

and then the system overall scheme was determined. The process of star map simulation method was established

and the fundamentals and implementation method of auxiliary field calibration

converting the magnitude into grayscale

coordinate transforming and star map display were described in details. The linear brightness correction and the nonlinear correction method based on measurement data were proposed to solve the problems that exist in the traditional conversion between magnitude and gray. The corresponding model was established and then was put forward the distortion correction method to solve the star positional deviation caused by distortion of the optical system. Finally

the star simulation was implemented with static and dynamic displays

and a double-screen was used to synchronize display by the thumbnail and an external monitor. The FK5 star catalogue was used in experiment

and the simulating results indicate that the system implements the simulation on the field of view of 10.5°×7.5° and star magnitude of-4.6~6 accurately

meanwhile the star location distortion error keeps within 0.017%.

关键词

Keywords

references

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