Detection and simulation of multi-spectral TDI CCD signal for space optics remote sensing device

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Detection and simulation of multi-spectral TDI CCD signal for space optics remote sensing device

Article | 更新时间：2020-08-12

- Detection and simulation of multi-spectral TDI CCD signal for space optics remote sensing device
- Optics and Precision Engineering Vol. 17, Issue 8, Pages: 1810-1818(2009)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所2. 长春光机所
- 作者简介：
- 基金信息：
- DOI：
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- Received：12 August 2008，
  
  Revised：13 October 2008，
  
  Published Online：20 August 2009，
  
  Published：20 August 2009
- 稿件说明：
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胡君,王栋. 空间光学遥感器的多光谱TDI CCD信号检测及仿真[J]. 光学精密工程, 2009,17(8):1810-1818

Detection and simulation of multi-spectral TDI CCD signal for space optics remote sensing device[J]. Optics and precision engineering, 2009, 17(8): 1810-1818.
胡君,王栋. 空间光学遥感器的多光谱TDI CCD信号检测及仿真[J]. 光学精密工程, 2009,17(8):1810-1818 DOI：

Detection and simulation of multi-spectral TDI CCD signal for space optics remote sensing device[J]. Optics and precision engineering, 2009, 17(8): 1810-1818. DOI：

摘要

为了实现采用高性能多光谱TDI CCD 对空间光学遥感系统的合理设计及应用，提出了对CCD控制信号的高速并行实时检测方法和视频图像连续输出的仿真设计方案。利用CCD行读出及转移的200s周期，对48路控制CCD驱动信号和31路直流偏置信号进行并行实时逻辑分析及检测。同时，把预制的CCD模拟图像，从磁盘阵列经PCI-X及LVDS总线高速传输到由FPGA、D/A、放大和滤波电路组成的视频图像生成系统，实现可连续、实时输出各种模拟测试图像。实验结果表明，可同时输出3路6MHz频率的彩色图像和8路12MHz频率的全色图像象素信号波形。象素信号基准电压8V；振荡幅值0～1.7V。有效采样时间和信号稳定度均满足成像电路的仿真测试要求。

Abstract

A method of high speed and parallel CCD control signal detection and simulative sequential video signal output is presented in order to get a reasonable design and an application of space optics remote sensing system with high-performance multi-spectral TDI CCD image sensor. At the line readout and transfer period of 200s

48 clock drivers and 31 DC bias signals are analyzed and detected simultaneously. At the same time

the prepared image data are transmitted fast from disk array to video image generator which is composed of FPAG

D/A

amplifier and denoise circuit

through PCI-X and LVDS bus. Sequential and real-time output of diversified testing video images is realizes. It is shown with experiments that three simulative chromatic video signals at frequency of 6MHz and eight simulative panchromatic video signals at frequency of 12MHz are generated synchronously and reliably. The reference voltage of video signal is 8V and amplitude range is 0~1.7V. The design requests are met for the valid sampling time and signal stabilization.

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