摘要
为了在基于多片CCD拼接的大视场遥感相机研制时挑选高性能和性能一致的CCD,提出了一种CCD性能参数测试系统。首先,介绍了该测试系统的各部分组成和功能。其次,阐述了该测试系统的核心部分CCD成像评估电路关键技术,提出了基于电荷泵的CCD时序驱动策略和闭环自动可调电压供电策略。然后,针对多片CCD拼接时主要考虑的一致性参数CCD像元响应非均匀性、盲像元、过热及过冷像元,提出了基于图像处理的CCD性能测试方法。最后,测试系统对XX-X遥感相机的17片CCD性能进行了测试。结果表明,待测的各片CCD参数性能指标均符合项目的设计要求。其中,各片CCD响应非均匀性均小于5%,响应度大于985 V/(J.cm-2),动态范围大于2 320:1。测试系统可以全面地评价待选用的各片CCD性能。
In order to select the same high-performance of CCD for a based-multichip CCD camera with wide field of view,a CCD test system was proposed.Firstly,the components of the CCD test system was introduced,and the working principle of CCD was analyzed based on the characteristics of structure for CCD.Secondly,the key technology of CCD imaging assessment circuit was described which is the core of the test system.A CCD timing-driven strategy based on charge pump and a power strategy based on closed-loop automatic adjustable voltage was proposed.A CCD test method based on image processing was proposed for CCD pixel response non-uniformity,blind pixels,hot and cold pixels which were mainly considered by the designer.Finally,the 17 CCDs of the XX-X remote camera were tested by the CCD test system.The experiments results show that the indicators of 17 CCDs are in line with the design requirements of the project.The response non-uniformity of all the CCDs is less than 5%,the responsivity is greater than 985 V/（J·cm-2）,and the dynamic range is greater than 2 320：1.The CCD test system can evaluate comprehensively the performance of CCD.
出处
《红外与激光工程》
EI
CSCD
北大核心
2012年第9期2415-2423,共9页
Infrared and Laser Engineering
基金
国家863高技术研究发展计划(863-2-5-1-13B)
关键词
CCD测试系统
电荷泵
闭环自动可调电压
响应非均匀性
图像处理
CCD test system
charge pump
closed-loop automatic adjustable voltage
response non-uniformity
image processing
