凝视红外成像系统温度变化对其性能的影响

Influence on the performance of staring infrared imaging system due to its temperature variation

在过去的凝视红外成像系统设计中,很少考虑成像系统自身组成部分的背景热辐射对其性能的影响,然而这些热辐射在某些成像系统中却是一个不可忽略的重要因素,尤其是采用非制冷探测器的成像系统。因为在大多数实际的应用中,成像系统的温度是不可能保持不变的。通过建立系统热辐射对其影响的模型,分析了系统自身组成部分温度变化对其性能的影响,表明了温度变化对系统性能有很大影响,同时提出了一种解决思路。

The background thermal radiation from internal parts of the staring infrared imaging system was usually not considered in designs of the system, however, these thermal radiations are an important parameter that can not be ignored in some imaging systems, especially in the system used the uncooled-detector, because the system temperature is not constant in most practical applications. A model about the background thermal radiation is established, and the influence on the performance of the system due to temp...