摘要
多通道目标跟踪图像采样系统由9路分系统组成,用于在天空背景下发现并跟踪远距离目标。为使系统在复杂气候条件下正常工作,必须对成像系统进行自动调光控制。讨论了影响CMOS图像传感芯片曝光量的因素,阐述了自动调光系统的工作原理。结合实际课题,从增强可靠性和集成度的角度出发,采用复杂可编程逻辑器件(CPLD)实现将电子快门与光阑孔径控制相结合的自动调光控制。
The multi-channel target tracking and sampling system is made up of 9 subsystems to detect and track targets far away against the background of the sk y. In order to make the system work normally in all weathers, the light auto-ad j usting control is necessary for its image-forming system. The influencing facto r s of the light exposure of the CMOS image sensor are discussed. The operating p rinciple of the light auto-adjusting system is stated. A practical light auto- ad justing system design is presented based on the complex programmable logic devic e (CPLD), for the purpose of increasing the reliability and the density of integ ration, to implement the light self-adjusting control with the electronic shutt er and the iris aperture adjustment together.
出处
《光学技术》
CAS
CSCD
2003年第5期617-619,共3页
Optical Technique
