| 通过噪声等效温差来评价红外系统的性能 |
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| 引用本文： | 宋敏敏,吴平,董大兴. 通过噪声等效温差来评价红外系统的性能[J]. 红外, 2010, 31(1): 22-25 |
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| 作者姓名： | 宋敏敏 吴平 董大兴 |
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| 作者单位： | 南京航空航天大学理学院,江苏,南京,211100 |
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| 摘 要： | 噪声等效温差对于红外系统的性能评价，对于检验红外系统性能来提高红外系统设计水平、降低成本、缩短研制和生产周期都有非常重要的作用。噪声等效温差是衡量红外探测器系统性能的重要指标之一。它与总体大气透过率、探测器性能参数等因素有关。本文推导了噪声等效温差的表达式，以特定的红外探测器为例，通过噪声等效温差表征了探测器的性能，并且通过编写程序检验了各个因素对探测器性能的影响。
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| 关 键 词： | 红外系统 噪声等效温差 大气透过率 红外热成像 |
| 收稿时间： | 2009-09-04 |
| 修稿时间： | 2009-09-22 |
Evaluation of Performance of Infrared Systems Using Noise Equivalent Temperature Difference |
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| songminmin,wuping and dongdaxing. Evaluation of Performance of Infrared Systems Using Noise Equivalent Temperature Difference[J]. Infrared, 2010, 31(1): 22-25 |
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| Authors: | songminmin wuping dongdaxing |
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| Affiliation: | Nanjing University Of Aeronautics And Astronautics,Nanjing University Of Aeronautics And Astronautics,Nanjing University Of Aeronautics And Astronautics |
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| Abstract: | Noise equivalent temperature difference is of great importance to the evaluation of the performance of infrared systems. It is helpful to the performance improvement, cost reduction and production periode shortening of infrared systems. Noise equivalent temperature difference is one of the important specifications for measuring the performance of infrared detector systems. It is related to the total atmospheric transmittance and detector performance parameters etc.. The expression of the noise equivalent temperature difference is deduced. The performance of a particular infrared detector is characterized by using the noise equivalent temperature difference and various performance influence factors are examined through a special program we wrote. |
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| Keywords: | infrared systems noise equivalent temperature difference infrared imaging atmospheric transmittance |
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