摘要
免像控航空摄影测量技术与传统航测相比,具有高效性、安全性、经济性等优点,是航空摄影测量发展的趋势。该文以国产TWX-09B型IMU-GPS组合导航系统为例,设置基于高精度位置信息和姿态信息2种免像控技术生产DOM和DSM成果。结果表明,2种免像控技术生产的DOM数据,平面精度相差不大,均能满足国家大比例尺航测规范要求;但基于高精度位置及姿态信息免像控技术生产DSM数据的高程精度优于基于高精度位置信息免像控技术,且基于高精度位置及姿态信息免像控技术生产DSM数据满足国家大比例尺航测规范要求。同时说明,国产TWX-09B型组合导航系统不仅稳定可靠而且精度高,达到甚至超过国际领先水平。
Image-free aerial photogrammetry technology,compared with the traditional aerial survey,has the advantages of high efficiency,safety and economy,and is the development trend of aerial photogrammetry.This paper takes the domestic TWX-09B IMU-GPS integrated navigation system as an example,and sets two image-free control technologies based on high-precision position information and high-precision attitude information to produce DOM and DEM results.The results show that the plane accuracy of the DOM data produced by the two image-free control technologies is similar and can meet the requirements of the national large-scale aerial survey standards,but the elevation accuracy of DSM data based on high-precision position and attitude information image-free control technology is better than that based on high-precision position information image-free control technology,and the production of DSM data based on high-precision position and attitude information without image control technology meets the requirements of national large-scale aerial survey standards.At the same time,it is shown that the domestic TWX-09B integrated navigation system is not only stable and reliable,but also has high precision,reaching or even exceeding the international leading level.
出处
《科技创新与应用》
2023年第34期15-18,共4页
Technology Innovation and Application
关键词
IMU-GPS组合导航
免像控
摄影测量
测绘领域
高程精度
IMU-GPS integrated navigation
image-free control
photogrammetry
surveying and mapping field
height accuracy
