红外技术2024，Vol.46Issue(8)：872-878,7.
光伏型红外焦平面探测器NETD的理论计算和测试分析
Theoretical Calculation and Test Analysis of Noise Equivalent Temperature Difference of Photovoltaic Infrared FPA Detectors
毛京湘 1孔金丞 1孔令磊 2龚晓丹 1黄俊博 1马颖婷1
作者信息
- 1. 昆明物理研究所,云南 昆明,650223
- 2. 空军装备部驻北京地区第一军事代表室,北京 100143
- 折叠
摘要
Abstract
The noise equivalent temperature difference(NETD)is an important parameter to characterize the sensitivity of infrared FPA detectors.In addition to the detectors,they are closely related to the application and test conditions.Starting from the NETD test method and test process,the NETD theoretical calculation formula for the photovoltaic infrared FPA detector was deduced,and the main factors affecting the NETD of the detectors were analyzed.The background-limit NETD of a typical infrared FPA detector under different integration times,storable charges,F numbers,and half-well fill output conditions was calculated and theoretically analyzed.Under a fixed background temperature,NETD with different temperature differences can be theoretically calculated from a certain temperature difference NETD.By selecting a typical detector for verification,a group of NETDs calculated from the normal NETD test results were found to be in good agreement with the test results under the corresponding temperature difference.The NETD calculation result for the 1 K temperature difference is significantly close to the actual situation,which can provide a reference for the application of thermal imager systems.关键词
红外焦平面探测器/噪声等效温差(NETD)/背景温度/积分时间/电荷存储量/半阱输出Key words
infrared FPA detector/noise equivalent temperature difference(NETD)/background temperature/integration time/storable charges/half well fill output分类
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毛京湘,孔金丞,孔令磊,龚晓丹,黄俊博,马颖婷..光伏型红外焦平面探测器NETD的理论计算和测试分析[J].红外技术,2024,46(8):872-878,7.
