SWDC-4大面阵数码航空相机拼接模型与立体测图精度分析

Mosaic model of SWDC-4 large format aerial digital camera and accuracy analysis of stereo mapping

SWDC-4是由四台非量测相机组成的具有较大幅面的数码航空相机,其主要特点是高程精度高,最高可达1/10000以上。本文介绍了虚拟影像的生成原理以及北京试验区航飞试验所进行的空中三角测量处理结果;从交向摄影的角度理论上详细分析了它的几何与立体测图的精度误差,为该类型相机以后的性能优化,误差分析和实际生产中解决相应问题提供了理论上的重要依据。

SWDC-4 is an aerial digital camera that integrated by four non-metric cameras and has a large format. The main characteristic is that it has high accuracy on height precision, can be more than 1/10000 at most, This paper discusses the generation principle of virtual image and demonstrates the results of GPS-supported aerial triangulation on the test block of Beijing. From the view of convergent photography, the geometric error and accuracy of stereo mapping are analyzed in detail, which provides a theoretical basis for optimizing on performance, analyzing of error and solving of problem in practice.