关键词: 旋翼无人机, 几何纠正, 精准农业, 精度分析

Abstract: An information collecting technology based on unmanned gyroplane was trially tested．The characteristics of geometric distortion from acquired images and their correction methods was introduced．The results showed that images from gyroplane exhibited significant geometric distortion，and the precision of the corrected images can satisfy the requirements in precision agriculture．

Key words: unmanned gyroplane, geometric correction, precision agriculture, precision analysis