摘要
根据格网改正原理，本文提出一种建立在模型坐标系的计算改正格网和实时格网改正的方法。该方法在解析测图仪上实现时，实时格网改正计算量小，计算程序简单。本文以C-100解析测图仪为例，说明了在现有的解析测图仪上实现实时格网改正的方法和条件。条件是实时格网改正程序计算时间加上实时循环程序实际执行时间不超过20毫秒。方法是修改实时循环程序公共参数区的定向参数，使像点和物点保持一一对应关系。
:
Acoording to the principle of grid correction, a method of calculating correction
grids and real-time grid correction bassed on the model coordinate system is presented.
Using this method on an analytical ploter, the calculating valume of real-time grid cor-
rections is small and it's calculating program is simple, too. Using a C-100 analytical
ploter as example, the implementing method and condition are indicated in this paper.
The condition is that, the calaulating time required both for real-time grid corrections
program and real-time loop program is not more than 20ms. The used method is to
update some orientation parameters of the common data area for real-time loop program,
in order to maintain the corresponding collinear relationship between a object point and
its image point.
出处
《测绘学报》
EI
CSCD
北大核心
1989年第3期183-189,共7页
Acta Geodaetica et Cartographica Sinica
