Ground testing system for detecting optical performance of space remote sensing spectrometer

Yan WANG; Xiao-hu YANG; Jin-ling WANG; Shu-rong WANG

doi:10.3788/YJYXS20173203.0206

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Ground testing system for detecting optical performance of space remote sensing spectrometer

Driving and Controlling | 更新时间：2020-07-07

- Ground testing system for detecting optical performance of space remote sensing spectrometer
- Chinese Journal of Liquid Crystals and Displays Vol. 32, Issue 3, Pages: 206-212(2017)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20173203.0206
  CLC： TP274+.2
- Received：19 September 2016，
  
  Accepted：10 November 2016，
  
  Published：2017-03
- 稿件说明：
移动端阅览
Yan WANG, Xiao-hu YANG, Jin-ling WANG, et al. Ground testing system for detecting optical performance of space remote sensing spectrometer[J]. Chinese journal of liquid crystals and displays, 2017, 32(3): 206-212.
DOI：

Yan WANG, Xiao-hu YANG, Jin-ling WANG, et al. Ground testing system for detecting optical performance of space remote sensing spectrometer[J]. Chinese journal of liquid crystals and displays, 2017, 32(3): 206-212. DOI： 10.3788/YJYXS20173203.0206.

摘要

为了对空间遥感光谱仪器进行光学性能检测，设计并实现了空间遥感光谱仪器光学性能地面检测系统。该系统包含硬件和控制软件两部分；硬件分为光源、机械运动子系统、信号采集子系统和计算机，控制软件在Windows环境下使用Labview实现。在电机控制中使用细分驱动，采用包含误差项计算步数的方法减小积累误差，通过指定波长扫描或连续波长扫描进行扫描机构控制，并实时显示光谱曲线。自动计算信噪比、使用广义最小二乘法对感兴趣的区域进行高斯拟合，并自动读取带宽。实验表明，本系统可以实现空间遥感光谱仪器的全波段、自动化光学性能检测，波长精度优于±0.05 nm，重复性优于0.01 nm，可在1 s内完成信噪比计算，光谱带宽小于1 nm，满足指标要求，提高工作效率，为载荷研制奠定了基础。

Abstract

For detecting optical performance of space remote sensing spectrometer

the ground testing system is designed and implemented. The system consists of hardware and control software. The hardware consists of light source

mechanical motion subsystem

signal acquisition subsystem and computer. The control software is implemented in the Windows environment with Labview. The subdivision driving and the method of computing the number of steps considering error term are used to reduce the accumulation of errors in motor control. Scanning mechanism is controlled by specified wavelength scan or continuous wavelength scan

and the spectral curve is displayed in real-time. The SNR is calculated automatically

the area of interesting is fitted based on Gaussian fitting with generalized least squares

the bandwidth is read automatically. The experiment results show that the system can achieve detecting optical performance of space remote sensing spectrometer in full wave band automatically. The wavelength accuracy is better than ± 0.05 nm

and the repeatability is better than 0.01 nm

the calculation of SNR is completed within 1 s. The spectral bandwidth is less than 1 nm. The system accomplishes the requirements

increases efficiency and lays the foundation for the development of aerospace load.

关键词

Keywords

references

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