Sources and Solutions of Errors in UAV Aerial Photography Technology

Jun 13, 2023

UAV aerial photography and surveying have advantages that other surveying technologies cannot replace in surveying and mapping large-scale topographic maps, and the image of high efficiency and convenience has been deeply rooted in the hearts of the people. However, errors will also occur in the process of aerial photography and measurement. After research and summary, the specific errors and solutions are analyzed as follows:

1. Instrument error

Due to the limited size and weight of the drone itself, it can only be equipped with ordinary CCD cameras. However, the azimuth element in the ordinary CCD camera is unstable, which has a great influence on the accuracy of the measurement results. Therefore, when the UAV performs large-scale aerial photography and measurement, it is necessary to calibrate the camera, that is, to determine the internal orientation elements of the camera, so as to reduce the error caused by the instrument.

2. Human error

Human error refers to the error caused by the limitation of human sensory identification ability, technical level and seriousness of work attitude, mainly including the error caused by the recognition of image control points or the human error caused by aeronautical triangulation and office data processing. Such human errors can be alleviated by improving the technical level of surveyors and taking reward and punishment incentives.