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中文摘要: 凝视型红外成像系统的噪声对系统极限作用距离影响很大，需要通过合理的指标衡量噪声大小并评估作用距离。本文系统性梳理了等效温差（Noise Equivalent Temperature Difference，NETD）、噪声等效通量密度（Noise Equivalent Flux Density，NEFD）或噪声等效功率（Noise Equivalent Power，NEP）等三种指标的差异与联系，并建立了它们之间的转换关系，进而给出了一种用NETD评估成像系统作用距离的改进方法，最后通过实验验证了该方法的有效性。
Abstract:The noise of the staring infrared imaging system has a significant impact on the system's maximum detection range, so it is necessary to measure the noise level and evaluate the detection range through reasonable indicators. In this article, the differences and connections between three indicators, namely NETD (Noise Equivalent Temperature Difference), NEFD (Noise Equivalent Flux Density), and NEP (Noise Equivalent Power), are systematically summarized and their conversion relationships are established. Furthermore, an improved method for evaluating the detection range of imaging systems using NETD is proposed, and the effectiveness of this method is verified through experiments.
keywords: noise equivalent temperature difference noise equivalent flux density noise equivalent power infrared detecting detection range
文章编号：20250312 中图分类号：TN214 文献标志码：A
基金项目:上海航天科技创新基金（SAST2022-35）
引用文本：
陈敬军,赵晟,潘鹤斌.基于凝视型红外成像系统噪声的极限作用距离评估[J].飞控与探测,2025,8(3):118-124.
陈敬军,赵晟,潘鹤斌.基于凝视型红外成像系统噪声的极限作用距离评估[J].飞控与探测,2025,8(3):118-124.