一种低空无人机航空摄影高度自动测量与校正方法

A Kind of Method on Automatic Measurement and Calibration of Airborne Photographic Height of a Low-altitude UAV

低空无人机航空摄影测量技术具有体积小、操作灵活等优良特点被广泛应用于测绘领域,尤其在工程测量方面,近几年得到长足的发展。结合实际工作经验和日常研究成果,系统化的分析无人机在实际航空摄影过程中对摄影高度进行自动化测量。本文提出一种基于多传感器与LMMSE相结合的测量与校准方法,并设计有关测量系统。经实验分析,表明该方法自动测高精度为±2m,精度可靠,有助于推动无人机航空摄影测量系统的发展应用。

Aerial photogrammetry technology of low altitude UAV is widely used in surveying and mapping field, especially in engineering surveying, which has made great progress in recent years. Combining with practical work experience and daily research results, this paper systematically analyzes the automatic measurement of photographic altitude of UAV in the actual aerial photography process. This paper presents a measurement and calibration method based on the combination of multi-sensor and LMMSE, and designs a measurement system. The experimental analysis shows that the method has a high accuracy of 2 m and a reliable accuracy. It is helpful to promote the development and application of UAV aerial photogrammetry system.