基于QT的机载三维激光地形测绘软件构建

Airborne 3D Laser Terrain Mapping Software Building Based on the QT

机载三维激光测量技术是一个极具挑战性的前沿性研究课题;介绍了Linux平台上基于QT的地形测绘整套构建过程,包括数据的采集,实时的高阶次的扩展Kalman滤波进行GPS、IMU、罗盘传感器的融合,再应用激光扫描仪数据解算得到最后的激光点云数据,然后对其三角化并利用OpenGL进行可控的三维显示,并且借助QT丰富的类库采用面向对象的思想设计具有很好的可扩展性,以协助完成进一步的测绘工作;实验证明,该系统具有较好的工程实用价值,可快速完成路线勘探工作。

Airborne 3D laser measurement technology is a advanced research subject full of challenging. This paper introduces a complete set of process construction of terrain mapping based on Linux/QT, including data acquisition, real time high-order time extended kalman filtering for the IMU, GPS, compass sensor data fusion and using laser scanner data solver to get the last point cloud. Then triangulate the point cloud and use OpenGL to perform a controlled 3D display. The system uses object-oriented ideas for the corresponding encapsulation and has the very good scalability, assist in further surveying and mapping work. Experiments show that the system has good practical value can be accomplished quickly route exploration work.