| 闫勇刚,王 耿,彭志勇,张登攀,魏绍亮,李晨博.红外焦平面阵列非均匀性校正性能的联合评价[J].电子测量与仪器学报,2022,36(7):170-176 |
| 红外焦平面阵列非均匀性校正性能的联合评价 |
| Joint assessment of non-uniformity correctionperformance of infrared focal plane array |
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| DOI： |
| 中文关键词: 非均匀性校正 性能评价 红外焦平面阵列 海上场景 红外光学系统 |
| 英文关键词:non-uniformity correction performance test infrared focal plane array sea scene infrared imaging system |
| 基金项目:国家自然科学基金（51775174）、河南省科技攻关项目（212102210323，202102210082）、河南理工大学博士基金（B2017 32）项目资助 |
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| 中文摘要: |
| 凝视红外焦平面阵列(IRFPA)的非均匀性已成为制约红外光学系统成像质量的关键因素。 针对自适应类非均匀性校
正性能评价问题,提出一种非均匀性校正性能联合测试方法;结合 3 种典型海上场景,探讨自适应类算法校正性能效果评价;构
建校正性能联合测试系统,在海面场景、海天场景和天空场景的输入条件下算法收敛时间分别为 16、18 和 15 s,小于传统自适
应算法的 20 s;在海面场景输入下,算法校正精度为 0. 28%,低于其他自适应算法的 0. 6%,有效温度范围为 19 ~ 31 ℃ ;在天空
场景输入下,算法校正后 NETD 为 87 mK。 实验结果表明,相较于传统的单一自适应校正算法,所提出的联合处理方法能够在
保证 NETD 的情况下,有效提高 IRFPA 非均匀性校正性能;也反映了 IRFPA 非均匀性校正算法能够改善红外光学成像系统
质量。 |
| 英文摘要: |
| Infrared focal plane array (IRFPA) non-uniformity correction (NUC) problem of staring infrared imaging system is the key
issue that affects the imaging quality. To assess NUC performance based on self-adaption scenes, a joint test method was developed
successfully, and was analyzed using three typical scenes as a test scenario. A joint test system was built further. The convergence time
was respectively 16, 18 and 15 s at the frame frequency of 50 Hz; the correction accuracy was 0. 28%, respectively lower than 20 s and
0. 6% by the traditional algorithm, and the effective temperature was in the range of 19 ℃ and 31 ℃ with the input of sea scene; the
corrected noise-equivalent temperature difference ( NETD) was 87 mK. The experimental results show that the proposed joint test
method, compared with the traditional self-adaption correction algorithm, can evaluate the NUC performance of IRFPA availably, and the
NUC algorithm of IRFPA can improve the imaging quality of infrared imaging system. |
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