| 线列探测器推扫成像中的锯齿拖影研究 |
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| 引用本文： | 蔡海蛟,危峻,李雪.线列探测器推扫成像中的锯齿拖影研究[J].半导体光电,2010,31(2). |
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| 作者姓名： | 蔡海蛟 危峻 李雪 |
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| 作者单位： | 中国科学院上海技术物理研究所,上海200083;中国科学院研究生院,北京100039;中国科学院上海技术物理研究所,上海,200083 |
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| 摘 要： | 在一种基于InGaAs材料的短波红外线列探测器中,光敏元呈品字形排列。在使用该探测器进行推扫成像时,图像中发现了锯齿状的拖影。这种拖影的出现降低了图像的质量。研究发现,串扰是锯齿拖影的成因,而串扰有多种来源,如探测器光敏元的光串或电串、电路的带宽不够等等。为了确定串扰的真正来源,进行了基于平行光管的单光点实验。实验观察了探测器对单光点的响应,实验结果表明这种锯齿拖影是探测器读出电路的带宽不够造成的。在改进了探测器读出电路的性能后,消除了图像中的锯齿拖影。
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| 关 键 词： | 锯齿拖影 串扰 读出电路 带宽 短波红外探测器 |
Research on Jagged Lagging Shadow in Push-broom Imaging with Linear Sensor Array |
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| CAI Haijiao,WEI Jun,LI Xue.Research on Jagged Lagging Shadow in Push-broom Imaging with Linear Sensor Array[J].Semiconductor Optoelectronics,2010,31(2). |
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| Authors: | CAI Haijiao WEI Jun LI Xue |
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| Affiliation: | 1.Shanghai Institute of Technical Physics;Chinese Academy of Sciences;Shanghai 200083;CHN;2.Graduate School of the Chinese Academy of Sciences;Beijing 100039;CHN |
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| Abstract: | An InGaAs-based shortwave infrared linear sensor was used to acquire images in push-broom scan mode. The arrangement of the sensor elements is stagger. In the images, a kind of jagged lagging shadow was found. There are some possible causes, such as crosstalk of the sensor and inadequate bandwidth of the circuit. To find the true cause, the single light spot experiment based on parallel light tube was carried out. Based on the experimental results and reasonable analysis, a conclusion is obtained that the i... |
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| Keywords: | jagged lagging shadow crosstalk readout circuit bandwidth shortwave infrared sensor |
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