时间延迟积分CCD线阵方向的调整方法

Method of Adjustingthe Line Array Direction of the Time Delay Integration CCD

时间延迟积分(TDI)CCD是一种类似面阵结构的线阵输出CCD,由于TDI CCD光电荷转移具有一定的方向性,TDI CCD在安装时其积分方向必须与地物在像面上的像移方向一致。给出了经纬仪测量原理,建立经纬仪测量坐标系。分析了对称视场和不对称视场TDI CCD线阵水平的测量原理和调整方法,推导了TDI CCD线阵方向的计算公式。给出的实例表明:TDI CCD线阵水平的测量与计算方法合理可行。

Time delay integration （TDI） CCD is a kind of CCD with frame structure and linear output, and its charge transfer has certain directivity. Therefore, CCD integal direction and TDI imagery heading must maintain the same. The measuring principle of the theodolite is given, and then the measuring coordinate system is established. Measuring principle and adjusting method are analyzed for both symmetrical and unsymmetrical field TDI CCD. The formula to calculate the linear array direction is also deduced. The example given at the end indicates the measuring and calculating method is feasible.