|
|||||
|
|
| 基于谱线漂移校正模型的实验室光谱定标修正 | |
| 引用本文： | 栗琳,胡勇,王跃明.基于谱线漂移校正模型的实验室光谱定标修正[J].光电工程,2012,39(2):68-73. |
| 作者姓名： | 栗琳 胡勇 王跃明 |
| 作者单位： | 栗琳: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 100049 胡勇:中国科学院上海技术物理研究所，上海 200083 王跃明:中国科学院上海技术物理研究所，上海 200083 |
| 基金项目： | 高分专项 (民用部分 )基础关键技术项目 (A0106/1112/JC01) |
| 摘 要： | 针对色散型高光谱成像仪实验室光谱定标方法进行了研究，在实验室光谱采集过程中仪器内部产热导致波段中心波长的漂移，由于高光谱带宽较窄，波段内中心波长的偏移会对光学遥感器的辐射定标精度产生影响。鉴于此，提出了谱线漂移校正模型来校正光谱定标结果。在文章最后分析了模型的精度并分别根据校正前后的光谱定标结果反算出积分球出射口处的辐亮度，与真实积分球数据对比，结果证明应用谱线漂移校正模型可以很好地校正谱线温漂的现象。 |
| 关 键 词： | 高光谱成像仪 光谱定标 谱线漂移校正模型 |
| 收稿时间： | 2011/9/13 |
Laboratory Spectral Calibration Amendment Based on Spectrum Offset Correction Model |
|
| LI Lin,HU Yong,WANG Yue-ming.Laboratory Spectral Calibration Amendment Based on Spectrum Offset Correction Model[J].Opto-Electronic Engineering,2012,39(2):68-73. | |
| Authors: | LI Lin HU Yong WANG Yue-ming |
| Affiliation: | 1 ( 1. The Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China ) |
| Abstract: | Laboratory spectral calibration research of a dispersive hyperspectral imager is investigated. During laboratory spectrum acquisition, the heat generated inside the imager leads to center wavelength shifts. Due to the narrow bandwidth of hyperspectral imager, spectrum shifts will affect radiometric calibration accuracy. As a result, a spectrum offset correction model is put forward to correct spectral calibration. Moreover, correction precision is analyzed and radiance of integrating sphere is simulated according to spectral calibration results before and after correction. Compared with real integrating sphere data, it is proved that the model can correct spectral shifts well. |
| Keywords: | hyperspectral imager spectral calibration spectrum offset correction model |
| 本文献已被 CNKI 等数据库收录！ | |