无人机小数码航空摄影测量空三加密技术在1∶1000山地类型中的实现

The implement of aerial triangulation for UAV digital aerial photogrammetry in 1:1000 mountains

无人机航空摄影因其灵活机动、高效便捷、时效性强等特点在近年来数字化测图中得到广泛应用。但无人机多采取非量测型数码相机,常规的空三加密无法达到大比例尺测图精度要求。文中通过大量野外布点,在较大区域的山地区域完成了符合1∶1 000大比例尺测图精度要求的空三加密,说明无人机航空摄影测量可以满足较大区域内山地类型大比例尺测图要求。

In recent years the UAV aerial photography has been widely used in digital surveying because of its flexi- ble, efficient and convenient, time - sensitive features and so on. But the UAV adopts non - metric digital camera, and the conventional aerial triangulation cannot reach the precision of large scale mapping requirements. In this paper, a large number of field points are used to complete the three - dimensional encryption in the mountainous area of the larger areas, which meet the accuracy requirement of 1 ： 1 000 large - scale mapping and show that UAV aerial photogrammetry can meet the requirements of largescale mountainous area large -scale mapping