IMU/DGPS辅助航测技术在航测成图系统中的应用

Application of IMU/DGPS Aided Aerial Photogrammetry Technology in the Aerial Photogrammetry Mapping System

由于我国目前的航测成图系统在实际作业中的测绘精度不足,影响了航测成图的质量,因此,对IMU/DGPS辅助航测技术在航测成图系统中的应用展开研究。基于IMU/DGPS辅助航空摄影,布设控制点,获取空间坐标和地形图数据编辑建库,引入图形数据,对数据文件进行命名。构建数字地面模型,转换模型数据格式,通过影像增强与纠正,凸显地物特征差异。经实验论证分析,本文控制点布设方案和影像质量符合规范要求,航测成图的精度误差远远低于精度要求的误差,证明本文方法具有有效性。

Due to the insufficient surveying accuracy of the current aerial photogrammetry mapping system in China,which affects the quality of aerial photogrammetry,the application of IMU/DGPS aided aerial photogrammetry technology in aerial photogrammetry sys-tem has been studied.Based on IMU/DGPS aided aerial photography,control points are arranged,spatial coordinates and topographic map data are obtained to edit and create a database,graphic data are introduced,and data files are named.The digital ground model is constructed,the model data format is transformed,and the difference of ground feature is highlighted through image enhancement and rectification.After experimental demonstration and analysis,the control point layout plan and image quality of this paper meet the requirements of the specification,and the accuracy error of the aerial photogrammetry mapping is far lower than the error range of the accuracy requirement,which proves the effectiveness of the method in this paper.