摘要
为大大缩短成图周期、提高生产效率、降低成本,南京市国土资源局委托中国测绘科学研究院在国内首次采用IMU/DGPS辅助航空摄影测量技术完成全市1000km2的数字正射影像图生产任务。本文以南京市数字正射影像图生产为例,对采用IMU/DGPS辅助航空摄影测量技术能够达到的精度、可能遇到的问题(如GPS信号干扰、怎样划分加密分区等)以及经济性等进行分析,提出一套可用于大比例尺航测成图的IMU/DGPS辅助航空摄影测量技术流程。
In order to reduce the cost, improve the efficiency of production and less time consuming, it is the first time in China that Chinese Academy of Surveying and Mapping has been assigned by Nanjing Bureau of Land Resources to produce about 1000 km~ 2 Digital Orthophoto Maps (DOMs) using IMU/DGPS-based photogrammetry technology. In this paper, the accuracy and the efficiency of the project are described. Some solutions are presented such as the dividation of the region for Integrated Sensor Orientation (ISO),the interruption of GPS L2 signal on ground reference station etc.Besides, the workflow for large scale mapping using IMU/DGPS technology is summarized and presented.
出处
《测绘科学》
CSCD
北大核心
2006年第1期60-61,共2页
Science of Surveying and Mapping
