应用光学, 2016, 37 (6): 932, 网络出版: 2016-12-26
基于AOTF的多光谱红外成像系统MRTD测试技术研究
MRTD in multi-spectral infrared imaging system based on AOTF
多光谱成像 红外多光谱 声光可调谐滤波器(AOTF) 性能表征 multi-spectral imaging infrared multi-spectral acousto-optic tunable filter(AOTF) performance characterization MRTD MRTD
摘要
为了实现红外多光谱成像系统光谱维MRTD测试,获取更多的目标背景信息,提出基于声光可调谐滤波器(AOTF)的多光谱成像系统静态性能测试平台的设计。在(3~5)μm波段范围内,采用设计搭建的静态性能测试平台完成了红外带内波段的细分,并在各个细分波段上分别对空间频率2.546 lp/mm、1.273 lp/mm、0.849 lp/mm和0.632 lp/mm的标准靶进行了MRTD测试。实验结果表明,得到的光谱维MRTD测试结果与理论结果一致,验证了测试平台的可靠性和测试方法的可行性。
Abstract
In order to achieve the spectral minimum resolvable temperature difference (MRTD) testing of infrared multi-spectral imaging and obtain more information of target and background, an acousto-optic tunable filter (AOTF)-based multi-spectral static performance testing platform was designed and developed. At 3 μm~5 μm waveband,through adopting the designed optical testing platform,the subdivision of band was carried out in middle-wave infrared region,and the MRTD tests were finished in targets with different spatial frequencies of 2.546 lp/mm,1.273 lp/mm,0.849 lp/mm and 0.632 lp/mm,respectively. The experimental result shows that, the test results of spectral MRTD correspond with the theoretic analysis,verifying the reliability of the optical testing platform and the feasibility of the testing method.
张燕, 王小兵, 耿顺山, 朱家乙, 徐爱东. 基于AOTF的多光谱红外成像系统MRTD测试技术研究[J]. 应用光学, 2016, 37(6): 932. Zhang Yan, Wang Xiaobing, Geng Shunshan, Zhu Jiayi, Xu Aidong. MRTD in multi-spectral infrared imaging system based on AOTF[J]. Journal of Applied Optics, 2016, 37(6): 932.