CCD传感器在轨地面分辨力自动检测  

Dynamic Ground Resolution Detection of the CCD Sensor

作　　者：许妙忠[1] 丛铭[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,武汉430079

出　　处：《光电工程》2013年第12期6-12,共7页Opto-Electronic Engineering

基　　金：国家重点基础研究发展973计划项目(012CB719900)

摘　　要：当前大量的遥感成像设备都采用电荷藕合器件(Charge Coupled Device,CCD)传感器作为其感光仪器,而地面分辨力是其非常重要的性能参数。针对各类CCD传感器,传统方法是通过人眼观察,然后估计出成像传感器的最小分辨尺寸,从而得到地面分辨力。本文基于地面辐射状靶标在CCD传感器上的成像表现,结合光学原理,提出了一种新的计算机自动检测CCD传感器动态地面分辨力的方法。该方法综合考虑了影响CCD传感器动态成像时,影响地面分辨力的多种因素,弥补了传统人工目视判读的缺陷与不足。并通过不同传感器的影像,验证了这种自动检测方法的可靠性和稳定性。Currently a large number of remote sensing device use a Charge Coupled Device （CCD） sensor as its photographic equipment, and the ground resolution is one of most important performance parameters of the CCD sensor. For all types of CCD sensor, the tradition method to obtain the ground resolution is implemented through human eyes＇ observation. Based on the imaging performance of the ground radial targets in the CCD sensors and combined with optical principle, a new method of automatically detecting the dynamic ground resolution of the CCD sensors was proposed. This new method has considered various factors which influence ground resolution. Besides, it has overcome the shortcoming of the traditional method. The experiment results validate the reliability and stability of this automatic detection method with different remote sensing images.

关 键 词：CCD传感器 地面辐射状靶标 地面分辨力 自动检测 

分 类 号：P236[天文地球—摄影测量与遥感] TP212[天文地球—测绘科学与技术]