数码航测中多拼CCD相机同步曝光方法及其实验分析

A method for synchronized exposure of multi-CCD cameras in digital phtogrammetry and its experimental analysis

多拼相机组合成等效大面阵相机,可以形成宽角视场,对于数码航测具有重要意义,其中同步曝光是其核心技术之一。本文研究了一种光耦继电器为核心部件的同步曝光方法,对同步曝光的性能进行了实验,利用统计分析的方法进行了数据分析,验证了相对于传统的电磁继电器方案的优越性,实验表明可以满足大比例尺数码航测的要求。

Equivalent large frame camera, composed of multiple CCD cameras and involving synchronized exposure as one of its key technologies, can form a wide field of view and play a significant role in digital phtogrammetry. Therefore, the research on a syn- chronized exposure method was conducted with solid state optronics relay as the key component in the paper, and furthermore, experi- ments on the performance of synchronous exposure were carried out. The data were analyzed with statistical analysis method and the ad- vantages, compared with those of the traditional electromagnetic relay methods, were verified. The experiment showed that the method could satisfy the requirements of large-scale digital photogrammetry.