High-sensitivty detection of space targets at close range

Xiu-bin YANG; Chun-yu LIU; Guo-wei FAN; Lin CHANG; Min WANG

doi:10.3788/OPE.20182604.0825

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High-sensitivty detection of space targets at close range

Modern Applied Optics | 更新时间：2020-07-05

- High-sensitivty detection of space targets at close range
- Optics and Precision Engineering Vol. 26, Issue 4, Pages: 825-833(2018)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
  2.小卫星技术国家地方联合工程研究中心, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182604.0825
  CLC： V443.5
- Received：18 July 2017，
  
  Accepted：23 August 2017，
  
  Published：25 April 2018
- 稿件说明：
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Xiu-bin YANG, Chun-yu LIU, Guo-wei FAN, et al. High-sensitivty detection of space targets at close range[J]. Optics and precision engineering, 2018, 26(4): 825-833.
DOI：

Xiu-bin YANG, Chun-yu LIU, Guo-wei FAN, et al. High-sensitivty detection of space targets at close range[J]. Optics and precision engineering, 2018, 26(4): 825-833. DOI： 10.3788/OPE.20182604.0825.

摘要

为实现高灵敏度条件下近距离空间目标的探测成像，通过设计惯性空间跟踪、terminal滑模稳定控制指向方法和成像行频自主匹配技术，利用高灵敏度CMOS相机实现了对空间目标的稳定指向和高信噪比成像。最后，利用卫星三轴气浮姿控仿真系统、空间LED目标显示系统和高灵敏度CMOS相机成像系统，进行惯性空间跟踪稳定指向姿控仿真及外场高灵敏度成像试验。试验结果表明：对惯性空间目标稳定指向的过程中，稳像姿态控制优于0.02°与0.001 5（°）/s时，成像曝光10 ms可获得信噪比为19 dB的低照度图像；利用

数为10的GSENSE400 CMOS相机，在光照度为0.05 lx和行频自主匹配成像姿态的10 ms曝光时间条件下进行20 km近距离外场成像试验，能够获得SNR大于18 dB的高信噪比图像。

Abstract

In order to achieve high sensitivity space target imaging under the condition of close distance

the inertial space tracking and pointing model

terminal sliding mode control method which stabilize the image

imaging frequency independent matching technology were designed to achieve space target stable pointed and high signal-to-noise ratio imaging by high sensitivity CMOS camera. Finally

satellite three axis attitude control simulation system

space-based LED target display system and high sensitivity CMOS camera imaging system were used to simulate attitude control in inertial space tracking and stable point

and then high sensitivity imaging was tested in and out field. The results show that when the attitude of stabilize imaging is better than 0.02° and 0.001 5 (°)/s in the process of the stability of the inertial space target pointing

high SNR image which is 19 dB can obtain in 10 ms exposure time; By using the GSENSE400 CMOS camera with

number of 10

out field experiment which has object distance about 20 km can obtain high SNR image more than 18 dB under the condition of low illumination about 0.05 lx and the exposure time about 10 ms.

关键词

Keywords

references

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