摘要
在对红外热像仪的测量中,噪声是评价红外热像仪性能的主要参数。噪声参数包括时间域噪声和空间域噪声,时间域噪声可分为高频时间噪声和低频时间噪声(即1/f噪声);空间域噪声可分为高频空间噪声(即固定模式噪声FPN)和低频空间噪声(非均匀性噪声)。对高频时间噪声和低频时间噪声进行了严格的区分和定义;给出了在短时间内忽略低频时间噪声时高频噪声NETD的计算模型;在不忽略低频时间噪声时计算高频噪声等效温差的数学计算模型和测量方法;对高频时间域NETD测量结果进行了不确定度分析与评价。
In the characterization of the thermal infrared imager, noise is an important parameter to evaluate the quality of the thermal infrared imager. Noise parameters include the temporal noise and the spatial noise. The temporal noise can be classified as high frequency temporal noise and low frequency temporal noise (namely 1/f noise); the spatial noise can be classified as high frequency space noise (namely fixed pattern noise FPN) and low frequency space noise (non-uniformity noise). The strict definition on ...
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第S2期519-522,共4页
Infrared and Laser Engineering
关键词
红外热像仪
噪声等效温差
固定模式噪声
时间噪声
Infrared imager
Noise equivalent temperature difference
Fixed pattern noise
Temporal noise
