提高无人机高程精度的影像获取方法

Research on Images Acquisition Method of Improving UAV Elevation Accuracy

近年来,无人机技术在大比例尺地形测量领域得到了广泛应用,但受基高比小、飞行姿态不稳定等因素的影响,无人机成图的高程精度有时难以满足规范要求。通过分析基高比和航片姿态对高程精度的影响,提出了新的影像获取方案。通过与传统方案进行实验对比分析,结果表明,在保证平面成图精度与传统方案基本一致的基础上,高程中误差降低了30.4%,高程检查点超限的个数减少了74%,提高了无人机的高程精度。

In this paper, the influences of base height ratio and attitudes of aerial photographs on elevation accuracy were analyzed, and a new scheme of getting images was proposed. Through the comparison between the new scheme and the traditional plan, the results show that on the basis of the basic agreement between the plane precision of the new scheme and the traditional scheme, the elevation error is down by 30.4%, the number of height check points is reduced by 74%, and the height accuracy of UAV is improved.